The Ellen DeGeneres Show

Ellie Kemper from The Officeis here and she has more detailed about her upcoming wedding. The 2012 Teacher of the Year is here: Rebecca Mieliwocki. Plus, Rufus Wainwright, a legendary singer/songwriter is here to talk about his latest album.

Matt LeBlanc has a new hit on his hands: Episodes, in which he stars as himself. Olivia Munn is also here talking about "Magic Mike" (2012) which also stars Channing Tatum.

Justin Bieber stops by to talk about graduating and he announces his tour for the summer/fall. He's also performing "Boyfriend". Will Smith is also here to talk about his newest film "Men In Black 3" (2012).

Katy Perry talks about her new tour film "Katy Perry: Part of Me" and talks about the stories behind some her biggest hits this year. Plus, Alanis Morissette (one of Katy Perry's idols) is here to talk about her newest album "Havoc and Bright Lights".

Howie Mandel talks about how it's like to work with Howard Stern on America's Got Talent. Plus, Cat Deeley is here to talk about the newest season of So You Think You Can Dance.

Alright everyone! It's Ellen's 1500th show and we're celebrating with clips, special guests, and the funniest moments from the past 8 years.

He's the only guy who can make Ellen laugh uncontrollably. Since he was hear last time, his divorce from Katy Perry was publicized. Plus, he hangs out with Sophia Grace and Rosie. Also, the dancers from "Step Up Revolution" (2012) perform with the help of TWITCH.

Kate Beckinsale stars in the upcoming hit "Total Recall" (2012) shot in the fabulous Toronto, Canada (representing!). Plus, Taylor Kitsch talks about starring in "X-Men Origins" (2011) and his latest "Battleship" (2012). Also, Jermaine Paul, the winner of this season of The Voice.

Nicki Nicki Nicki is here. She talks about her huge new CD coming soon "Pink Friday: Roman Reloaded". Plus, if Nicki is here, you know Sophia Grace and Rosie are going to be right behind. They reunite today.

Carrie Underwood talks about her amazing year on the charts with her new album "Blown Away". Plus, she performs "Good Girl". Anna Kendrick talks about her latest film "What to Expect When You're Expecting" (2012).

Eva Mendes talks about her new film "Girl In Progress" (2012). What's that about her hanging around with Ryan Gosling? Beth Stern, wife of Howard Stern talks about her new design show Mom Caves.

Robert Downey Jr. and Scar Jo stop by to talk about "The Avengers" (2012). Was there chemistry on set? Find out. Plus, The Voicefavourite Jamar Rogers got sent home this week, so he's here to perform.

Bill Clinton talks about his daughter's wedding, his new vegan-style food choices since his heart surgery, and how Hilary is doing jetting across the world. Plus, Whitney Elementary gets their look at a new library, built just for them.

Julianna Margulies talks about The Good Wife's success. Kevin Nealon shares some comedy bits from Las Vegas. And Sophia Grace and Rosie have a dance number for you.

Jessica Alba is here to talk about her organization "The Honest Company" that vows to keep children healthy. Scott Caan from Hawaii Five-O. He also talks about a new play he co-wrote. Plus, Tony is away so PAULY D is spinning up tunes today.

Diane Keaton talks about her newest film "Darling Companion" (2012) with Kevin Kline. Plus, Dancing with the Stars contestants Donald Driver and Peta Murgatroyd talk and dance.

Hugh Grant talks about his new claymation Pirates movie.

Need we say more? The girls are back in town. Plus, Adam Levine of THE VOICEfame. Is he every going to hit the road with Maroon 5 again?

Jack Black talks about his new project "Bernie" (2012) working alongside Shirley MacLaine. Cobie Smulders is hitting the big screen in "The Avengers" (2012). She's also here for the first time.

Jesse Tyler Ferguson of Modern Family. He always has a new funny story, so check out what he's got this time. Plus, Rita Wilson debuts her new CD "AM/FM" and talks about what it's like to be married to Mr. Tom Hanks (for 24 years).

Sharon Osbourne is here to talk about her new animated series Jake and the Neverland Pirates. PlusDancing with the Stars partners Maria Menounos and Derek Hough. Finally, Chef Roberto Martin cooks up something for Ellen.

Nicole Richie chats with Ellen about her show Fashion Star. Jennie Garth is going country on her new show Jennie Garth: A Little Bit Country. Tom Shadyac talks about his new found pleasure: documentaries. ALSO: EARTH DAY SHOW.

Wanda Sykes will get you laughing, that's for sure. She's one of the most outrageously funny female comics and you can hear her voice in "Ice Age: Continental Drift" (2012). Bon Iver, delivers a performance from their debut album.

Mariska Hargitay tells how she adopted two beautiful babies. She's still on Law and Order: SVU, don't worry. Legendary music group Squeeze is here - it's one of Ellen's favorite bands. Plus, Megan Hilty from Smash. Ellen, it's almost 1500 shows, please tell us what's happening?!

Emily Blunt is married to John Krasinsky... no way?! Now she's starring in "The Five-Year Engagement" (2012) alongside funnyman Jason Segel. Plus, Jason Mraz performs.

Michelle Obama and Ellen talk about military families today. Katharine McPhee stars in the new show Smash. See what she thinks of the new show. Plus, Neon Trees performs!

Sean Hayes talks about becoming one of "The Three Stooges" (2012). Gabrielle Union stars in the new "Think Like A Man" (2012) movie, based on Steve Harvey's own book! Wayne Pacelle is an outspoken defender of animals and he's here with his new book!

Maya Rudolph better explain why the talk show on her new show Up All Night seems a lot like The Ellen DeGeneres Show. Karmin performs, it's been one year since they made their debut on this show! What a year. Josh Bowman from Revenge.

Khloe Kardashian is here to talk about Lamar, what else. And her sisters. Ellie Goulding performs "Lights" as she tops the British charts. A 12-year old Trumpet Playing tap dancer is here (Gabriel Angelo).

Jane Lynch from Glee and "The Three Stooges" (2012). Plus, Alison Sweeney talks about this seasons contestants on The Biggest Loser. Hey, were almost at 1500 shows Ellen!

Cee Lo Green stops by to promote The Voice. Miranda Kerr is part of the 2012 Victoria's Secret Swim collection. Plus, sisters Chloe and Halle Bailey are back to perform another song.

Jason Biggs talks about his big movie "American Reunion" (2012). Plus, Colbie Caillat and Common perform together.

Jennifer Love Hewitt stars in a scandalous new Lifetime series, "The Client List" as a high-end call girl. Rascal Flatts performs. And Kym Douglas is here with more beauty tips.

The bashful Emma Stone, who's soon to be starring in "The Amazing Spider-Man". Country music legend Tim McGraw performs with Kenny Chesney.

Andrew Garfield is set to climb buildings in "The Amazing Spider-Man" rework. Mo Isom, is a female kicker for the LSU football team. Edie Falco plays Nurse Jackie on... well, Nurse Jackie.

Colin Farrell talks about the "Total Recall" remake. Seann William Scott talks about being back with the old gang in "American Reunion" (2012). Plus, Lionel Richie performs.

Kristin Chenoweth talks about her new show GCB at the speed of sound. A touching story about bullying: Tina and David Long talks about how their son Tyler committed suicide after years of bullying in a new documentary. K'Naan and Nelly Furtado perform "Is There Anybody Out There".

Elizabeth Banks plays Alec Baldwin's wife on 30 Rock. Now she's appearing in "The Hunger Games" (2012), that movie that everyone is talking about! Casey James from American Idol's ninth season, where he placed third performs a new track from his debut CD.

Armie Hammer is in the upcoming live-action Snow White film "Mirror Mirror" (2012). Kevin Nealon is back to tell you about the art of seduction. UK YouTube sensation Birdy is here to perform.

Ed Helms talks about his role in "Jeff, Who Lives at Home" (2012) alongside Jason Segel. Kathy Freston is a nutritionist and tells Ellen about her new book.

Jonah Hill has seen massive popularity in the past couple of years. He's starring in "21 Jump Street" (2012) which opens this week. Plus Chris Rene was a finalist on The X-Factor. See what's new with him when he performs "Young Homie" off his upcoming CD.

Jessica Simpson is pregnant and naked on the cover of a magazine. She catches up with Ellen. Ellie Kemper is here to talk about "21 Jump Street" (2012). Dierks Bentley and the Punch Brothers perform their cover of Bob's Dylan's famous track.

Jason Segel talks about "Jeff, Who Lives at Home" (2012). Jennifer Morrison talks about the recent House ending news and also her new show Once Upon A Time. Plus, Cirque du Soleil performs an intense juggling act from their show ANTS.

David has been through some challenging times, but he's still good friends with Courtney Cox and executive produces Cougar Town with her. He's also now starring in a pilot with Portia de Rossi. Robin Thicke performs a tribute to Whitney Houston.

Megan Fox is here for the first time. She's talking about "Friends with Kids" (2012) starring alongside the hilarious Kristen Wiig and Jon Hamm. Carson Daly talks about The Voice. Justin Willman is a magician!

The hilarious and dramatic Jon Hamm is here with some behind the scenes clips of the newest season of Mad Men. Michael Weatherly from NCIS. And Sara Bareilles who's a new judge on NBC's The Sing-Off.

Christian Slater talks about Fox's Breaking In. Lenny Kravitz is actually starring in The Hunger Games (2012) coming out soon so find out who he plays. Plus, a new CD of his is coming out soon. Novak Djokovic is the #1 ranked tennis player in the world.

Julianne Moore stars in the new HBO film "Game Change" where she takes on the role of Sarah Palin. Idina Menzel is here to discuss her new PBS concert special "Barefoot at the Symphony".

Steve Harvey gets quizzed for the top answers by Ellen. He brings another edition of his bestselling book and talks about being the Family Feud host. Then Jason Mraz performs his new son "I Won't Give Up".

Sheryl Hines played Larry David's wife on Curb Your Enthusiasm. Now she's on the new Suburgatory. Plus, Steve Spangler with more science tricks. Kacie B. was an early frontrunner on The Bachelor but was sent home with a rose.

Kate Walsh talks about Private Practice. Sophia Grace and Rosie are back from interviewing the stars this weekend.

Meredith Vieira talks about her career and hosting gigs, and her upcoming stint as a Special Correspondent for "Rock Center with Brian Williams". Plus, (the gorgeous) Emily VanCamp talks about her sinister show Revenge. Plus, a new look at Ellen's JCPenny commercials.

Seth Rogen talks about his latest comedies and his hosting duties at the Independent Spirit Awards on Saturday. Plus, Bethenny Frankel discusses her show Bethenny Ever After, where she demonstrates her home-making tips.

You heard from Justin Theroux yesterday, today hear from Jennifer Aniston on their new film, "Wanderlust" (2012). Plus a skating act from Las Vegas, see the Skating Aratas duo.

Randy Jackson talks to Ellen about American Idol. Justin Theroux talks about Waunderlust, starring alongside new beau Jennifer Aniston. Plus, Natasha Bedingfield pops by to sing off her new album.

Taylor Swift and Zac Efron are here to discuss their new animation film "The Lorax" (2012). Plus, a huge surprise - something Ellen has never done before.

Sophia Grace and Rosie are back again. Amanda Seyfried is just 26 but she's already starred in some of this decade's top films. Now she's starring in "Gone" (2012) and talking to Ellen about it. Plus, Kym Douglas is back with more beauty tips.

Reese Witherspoon talks about her new film "This Means War" (2012) where she appears alongside Chris Pine and Tom Hardy. Plus, Nathan Lane talks about the upcoming "Mirror Mirror" (2012) Snow White film starring with Julia Roberts.

Sean "Diddy" Combs is here to talk about his new documentary called "Undefeated". Kate Upton is going to appear on the cover of Sports Illustrated Swimsuit Issue and she's here to tell you how that happened.

Ellen Pompeo talks about, what else, Grey's Anatomy. Josh Dueck is a 31-year-old skier who lost the use of his lower body in a tragic accident, but he's now going to become the first person to land a sitting-ski back flip. Check out his story. Dierks Bentley performs.

Kris and Bruce Jenner talk about their new book "Kris Jenner... and All Things Kardashian". Kevin Nealon tries to stir up some romance. Sophia Grace and Rosie are back. Giorgio Fareira, a youtube singing sensation.

Jennifer Lopez and Marc Anthony are here. Awkward... but they are here to talk about a new dance show called "Q'Viva" joined by third host Jamie King.

Ellen has invited the famous Sophia Grace and Rosie duo back for another special trip. Channing Tatum is here to talk about "The Vow" (2012), but usually also reminisces about his stripping past.

Martin Scorsese is here for the very first time and he's showing us why "Hugo" (2011) has been such a hit with some clips. Rachel McAdams has starred in some of the last decades' top-rated films. Now she's starring in "The Vow" (2012) based on real-life events alongside Channing Tatum.

Jim Parsons from The Big Bang Theory, coming off his second win at Outstanding Actor in a Comedy Series at the Golden Globes. Miley Cyrus is also here to perform!

The judges from The Voice tell Ellen what to expect from the upcoming season. Also Superbowl pre-game talk!

Michelle Obama is here to talk about her campaign to end childhood obesity and more. Daniel Radcliffe talks about his new film "The Woman in Black" (2012). Plus, another deserving teacher gets her chance to meet Ellen.

Drew Barrymore visits Ellen and she just got engaged! Also that film "Big Miracle" (2012), they're really trying to promote that. Octavia Spencer just won a Golden Globe and a SAG away for her role in "The Help" (2011). Flo Rida performs "Good Feeling".

Simon Baker from The Mentalist is here. Kristen Bell talks about her new film "Big Miracle" (2012). Adrian Romoff, a 7-year-old piano prodigy. Victoria Azarenka, the #1 ranked female tennis player after this year's Australia Open.

John Krasinski from The Office also talks film, with a new one called "Big Miracle" (2012). Plus 2 CELLOS performs, and they'll be on Glee tomorrow.

Ted Danson talks about his new film "Big Miracle" (2012). Kellie Pickler talks about her upcoming album "100 Proof". Christopher Plummer talks about "Beginners" the film that earned him a Golden Globe.

A HUGE show today featuring the outrageous Jimmy Kimmel, the hilarious Melissa McCarthy, and the legendary band Earth, Wind, & Fire. Also So You Think You Can Dance performers.

Mario Lopez from Extra drops by. Ben Flajnik from The Bachelor chats with Ellen.

Sam Worthington talks about his newest film "Man on a Ledge" (2012). Michael Strahan is a FOX NFL Sunday commentator and former NFL defensive. Seal also performs off his upcoming album "Soul 2".

Shemar Moore from Criminal Minds. Kym Douglas tells us why she's our resident beauty expert. And band Walk Off The Earth performs "Somebody I Used to Know" which is a hit on YouTube.

Kiefer Sutherland talks about his new show on Fox called Touch. Plus, Kevin Nealon talks to people on the streets about Chinese New Year. Also Youtube sensation Aunt Carol.

Rob Low is here talking about his handsomeness and Parks and Recreation. Plus, Adam Lambert returns to perform an exclusive first-look at the single "Better Than I Know Myself" off his upcoming CD "Trespassing".

Colin Firth is here to talk about his role in "Tinker Tailor Soldier Spy" (2011). Jeremy Irvine talks about working under the direction of Steven Spielberg in "War Horse" (2011). Plus Colbie Caillat performs. And Uggie the Dog wows the audience which his trainer Omar Von Muller.

Steven Tyler talks about American Idol. Timothy Olyphant talks about the third season of Justified. Plus, Country Music Award winner Chris Young performs.

Sofia Vergara from Modern Family is here talking about her CoverGirl shoot with Ellen. Plus, Big Time Rush is here to perform and chat with Ellen.

Queen Latifah talks about "Joyful Noise" (2012) her new film with Dolly Parton. Kenneth Branagh is one of the most respected actors in the world. He chats with Ellen about "My Week With Marilyn" (2011).

James Spader of Boston Legal and now, The Office, chats with Ellen. Plus, the hosts of Brain Games on National Geographic show Ellen some previews of their show.

Woody Harrelson talks about his new film "Rampart". Joshua Jackson talks about Fringe. The Wanted performs. Also: A story of survival.

Kelly Osbourne co-hosts a fashion police special for the Golden Globes. L.A. Reserve Deputy Shervin Lalezary tells how he captured the suspect in the L.A. arsons. Nolan Gould is here, the misguided son on Modern Family. Gavin DeGraw performs.

It's Kirstie Alley talking about fitness. Casey Wilson from Happy Endings talks about the rapid-fire dialogue on the show. Jordyn Wieber is a U.S. Gymnast heading to the next Olympics.

Nicole Polizzi, Jennifer Farley, Sammi Giancola, and Denna Cortese - all here on Ellen to dish out the scoop about what's going to happen on the newest season of Jersey Shore. Ellen and Target help out another amazing school.

Howie Mandel is here to talked about his new show, Mobbed. Elle Fanning talks about her new film "We Bought A Zoo" (2012) starring alongside Matt Damon.

Charlize talks about her newest film "Young Adult" (2011) from writer Diablo Cody. Kevin Nealon goes to the mall with hilarious consequences. Christina Perri who sang "A Thousand Years" from the "Twilight Breaking Dawn" (Part 1; 2011) soundtrack will perform.

Diane Keaton is a legend and she's here to talk about her incredible life and upcoming new memoir, "Then Again". Day 9 of 12 days of Giveaways.

Allison Janney worked with Ellen on "Finding Nemo" but today she's here to talk about her role in "The Help" (2011). The 7-year-old star of "We Bought A Zoo" who worked alongside Matt Damon. Day 8 of 12 days of giveaways.

Lady Gaga talks and performs her latest hit "Marry the Night" from her latest CD "Born This Way". Questions about the 14-minute video included. Day 7 of 12 Days of Giveaways. Greyson Chance stops by, back from his trip to Asia, to talk about his latest music video, that's #3.

Katherine talks about "New Year's Eve" (2011). And she shares her plans for the holiday. Lenny Kravitz is also here to perform off his new CD: "Black and White America".

Hilary Swank talks to Ellen about "New Year's Eve" (2011) and shares her plans for the holiday. The host of The X-Factor, Steve Jones talks about the behind-the-scenes of the show. Day 4 of 12 days of giveaways.

Josh Duhamel talks about his wife, Fergie, and all the baby bump stuff. He's also in this year's "New Year's Eve" (2011) film. Laura Dern is here to talk about "Enlightened" on HBO. Day 3 of giveaways.

Russell Brand was finally allowed into the U.S., so he's here to talk with Ellen. Sting talks to Ellen and then performs - he's now 60 years old.

Vince Vaughn and his mother Shea tell Ellen about Shea's new book on defeating stress. Bono is here for the first time and talks about the RED campaign. Shailene Woodley talks about starring alongside George Clooney in "The Descendants". Plus, Day 1 of the 12 days of giveaways.

Stevie Wonder performs. Kristin Chenoweth talks about hosting the American Country Awards. Kym Douglas is always showing Ellen new ideas for the holiday and beauty tips.

Alison Sweeney updates Ellen on her family. She also hosts The Biggest Loser. Usher and David Guetta are here to perform their #1 hit, "Without You" from David Guetta new CD "Nothing But The Beat.

Minnie Driver is here and she wants a rematch with Ellen. Also Sarah Hyland from Modern Family. She's the oblivious older daughter on the show, find out what she's like at home. More Hidden Audience Talents.

Felicity Huffman talks about the final season of Desperate Housewives. A spectacular performance by the always amazing Cirque du Soleil troupe taken from their latest show "IRIS, A Journey Through the World of Cinema". Ellen also checks in with principal Sherrie Gahn of Whitney Elementary.

A epic surprise guest that just about made their middle name be #1. Ellen also has a CoverGirl shoot with Sophia Vergara to show you. Adam Levine and Gym Class Heroes perform live.

Astronaut Mark Kelly and his daughters talk to Ellen about Gabrielle Giffords' heartbreaking recovery story. Plus, Tim Allen from his new show, Last Man Standing. And Daughtry performs off their new CD "Break the Spell".

Rihanna talks to Ellen about the new album "Talk That Talk" and about the controversy of the first music video. New Orleans quarterback Drew Brees surprises Ellen. Steve Spangler is back with more science stuff.

Dylan McDermott talks about his new show American Horror Story. Miranda Lambert is the female vocalist of the year at the CMAs. Lil' P-Nut is now a movie star. Get an update from this 9 year old rapper and his upcoming role in "Happy Feet 2".

Amy Adams tells you why you should see "The Muppets" (2011) coming soon to a theater near you. Kina Grannis is a Youtube sensation and she'll be singing some songs from her newest CD.

Lauren Graham talks about her newest love interests and the all-star cast on Parenthood. Barry Deley is the weatherman that won the lottery and got called by fellow news anchor Squire Barnes. Josh Vietti is a hip-hop violinist.

Katy Perry talks about her one year anniversary, birthday, and performing live before the world premiere of her new video; Savannah Robinson performs.

Luke Bryan interviews artist on the red carpet at the CMAs in Nashville and Melissa McCarthy talks about an incident involving spanks. Armie Hammer talks about upcoming movies and J. Edgar.

Taye Diggs talks about his new Muppet movie and Jermaine Jackson talks about his late brother Michael and Dr. Conrad Murray.

Kirsten Dunst talks about her living situation and her new film Melancholia (2011). Sophia Grace and Rosie talk with Ellen and sing another song.

Private Practice star Kate Walsh talks about her trip to Mexico and kissing people she worked with. Freida Pinto talks about getting a butt double and her new movie Immortals.

Antonio Banderas talks about his movie Puss in Boots (2011) and having the president over at his house. Johnny Galecki makes his first appearance on the show and talks about his new movie In Time (2011).

Eddie Murphy talks about "Tower Heist" (2011) and he's facing a hard job soon: hosting the Oscars. Twitch dances and Ellen shows clips from some of her 1400 episodes; Coldplay performs.

Neil Patrick Harris and Bethenny Frankel are here for one of the biggest shows of the year. Get ready for the always spooktacular Halloween Show!

Michelle Williams talks about her new film "My Week With Marilyn" (2011). Ariel Winter from Modern Family. And Kevin Nealon is here going door to door on camera for laughs.

Two big names in entertainment: Justin Timberlake and Coldplay. Justin Timberlake talks about his new film "In Time" (2011). And Coldplay talks about their newest album.

Will Arnett is here talking about his dad life on set of Up All Night and at home. Anton Yelchin and Felicity Jones talk about their new film "Like Crazy". Landon Donovan from L.A. Galaxy soccer team. Lady Antebellum performs.

LL Cool J from NCIS: Los Angeles. Jonah Hill talks about his new animated show Allen Gregory. Jason Derulo performs two songs "Don't Wanna Go Home" and "It Girl" from his CD "Future History".

Harry Connick Jr. appears with his daughter Kate Connick. Sean Hayes who is producing Grimm. Rob Kardashian and Cheryl Burke from Dancing with the Stars. The story of Xavier Lamb, a 3-year old rescued from a fire.

Marsha Cross talks about the end of Desperate Housewives.

Steve Harvey will get you laughing - whether it's from his relationship advice or from the newFamily Feud show that he hosts, you know, in his spare time. Rachel Maddow talks to Ellen about her hilarious slant on news duringThe Rachel Maddow Show. Robyn also performs off her latest album.

Taylor Swift, in her annual stop-over to the Warner Bros. studios talks to Ellen. Abigail Breslin isn't so small anymore and talks about her newest film "Janie Jones". Foster the People performs their unstoppable hit "Pumped Up Kicks".

Martin Sheen and Emilio Estevez are both here to discuss their new film and collaboration: "The Way". Ellen will also inquire about Charlie, since he no longer films on the set next door. Also, an amazing 12 year old singer named Cole Armour makes his first television appearance.

Hilary Duff talks about being pregnant. J.R. Martinez with dancing partner Karina Smirnoff fromDancing with the Stars. Logan Lerman from the upcoming "The Three Musketeers" remake.

Jesse Tyler Ferguson talks about Modern Family. Michael Strahan talks about retiring from the NFL and being an analyst on FOX's NFL Sunday. Plus, Ellen in your Ear at the local Michael's art supply store and two singing sisters from Atlanta.

The charming and hilarious Kaley Cuoco from The Big Bang Theory talks about sharing the set with so many talented actors. Adam Scott from Parks and Recreation, talks about working with Amy. Lupe Fiasco performs off his new album, "Lasers".

Ellen interviews Glen Campbell the country music star who has recently started to battle Alzheimer's. He also performs live. Ellen also talks to Ellen Pompeo from Grey's Anatomy. Plus some more YouTube sensations: this time a 8- and 5-year old tackle Nicki Minaj's "Super Bass".

Liza Minelli talks about her new CD, "Confessions" among other topics, such as the late Michael Jackson. Keith Urban hits the stage. Lester Smith talks about his philanthropy projects and challenges others to do the same.

From the upcoming movie "The Big Year", Steve Martin, Jack Black, and Owen Wilson. And a YouTube sensation, Christina Grimmie.

Alyson Hannigan spills details on How I Met Your Mother. Scotty McCreery of American Idol. And Blake Mycoskie, the founder of Toms Shoes talks about his new book, "Start Something That Matters".

Zooey Deschanel fromThe New Girl chats with Ellen. Dancing duo Ricki Lake and Derek Hough perform and talk aboutDancing with the Stars.

Reality star Kim Kardashian and her husband basketball player Kris Humphries are on the show.

Kellier Pickler performs.

Dancing with the Stars pair Hope Solo and Maksim Chmerkovskiy, actor Hugh Laurie and actress Cheryl Hines are on the show today.

Rules of Engagement's David Spade and reality star Bethenny Frankel are on today's show.

Model Heidi Klum, Nancy Pelosi (D-CA) and LeAnn Rimes performs.

From The X Factor judges Simon Cowell, Paula Abdul, LA Reid, Nicole Scherzinger and host Steve Jones. Luke Bryan and Jarle Bernhoft also perform.

From Private Practice Kate Walsh, How to be a Gentleman's Kevin Dillon and Cody Simpson performs.

Comedian Wanda Sykes, dancers Julianne Hough and Kenny Wormald and Joe Jonas performs.

Actor Jamie Foxx, TV host Dr. Drew and Dancing with the Stars pair Elisabetta Canalis and Valentin Chmerkovskiy are on the show.

From the movie Moneyball Brad Pitt and Chris Pratt and singer Kelly Clarkson are on the show.

From the cast of 50/50 Seth Rogen, Joseph Gordon-Levitt, Anna Kendrick and Bryce Dallas Howard are on the show. Also, Adam Levine stops by and performs with his band Maroon 5.

Harry Connick Jr. co-hosts with Ellen and talks about his movie "Dolphin Tale" (2011).

Christina Applegate talks about Up All Night and calls her fellow co-star. Kathy Bates is on the show for the first time. Demi Lovato is back with an uplifting story and a new album.

Los Angeles Galaxy soccer star David Beckham and Lady Antebellum are on the show.

Desperate Housewives' Eva Longoria and singer Greyson Chance are on the show.

Two and a Half Men's Jon Cryer, Dancing with the Stars' Chaz Bono and a performance by Taylor Swift.

From Dancing with the Stars David Arquette and a performance by the United States Air Force Band.

Two and a Half Men's Ashton Kutcher is on the show.