Actor Kevin Bacon; TV host Sherri Shepherd; Mary Lambert performs.
Actor Armie Hammer; animal expert Dave Salmoni; The Boxer Rebellion performs.
TV host Carson Daly; actress Betty White; Timeflies performs.
Comic Kevin Hart; Trace Adkins and Colbie Caillat perform.
Actor Jamie Foxx; former professional tennis player Jimmy Connors; Matthew Morrison performs.
Actor Billy Crystal; Pitbull performs.
Comic Kathy Griffin; actor Billy Gardell; Grouplove performs.
Actor Steve Carell; author Ken Ilgunas; Barenaked Ladies perform.
Sports analyst Terry Bradshaw; comic Steve Byrne; Joseph Arthur performs.
Actress Kristin Davis; producer Harvey Fierstein; The Mowgli's perform.
Journalist David Gregory; comedian J Chris Newberg; the winner of "The Voice" Danielle Bradbery performs.
Actor Kevin Bacon; TV personality Mel B.; Bad Company performs.
Actor Russell Crowe; professor Mike Raupp; Judith Hill performs.
Actor Henry Cavill; authors Jessica Buchanan and Erik Landemalm; She & Him performs.
Actor Danny McBride; reality-TV star Khloé Kardashian Odom; The Wanted performs.
Actor Owen Wilson; reality-TV stars Wayde King and Brett Raymer; LeAnn Rimes performs.
Actor Vince Vaughn; former professional basketball player Kenny Smith; Scotty McCreery performs.
Actress Sandra Bullock; comic Bob Saget; Il Volo performs.
Comic Whitney Cummings; model Alex Minsky; John Fogerty performs.
Actor David Spade; actress Joey King; Grace Potter performs.
Actress Cate Blanchett; actor Michael B. Jordan; Court Yard Hounds perform.
Actor Ashton Kutcher; actress Jayma Mays; Hiatus Kaiyote performs.
Actor Aaron Paul; Selena Gomez performs.
Actress Gillian Anderson; actors Jim Rash and Nat Faxon; Kenny Chesney performs.
Singer Katy Perry; former professional football player Cris Collinsworth; Kacey Musgraves performs.
Actress Kristen Bell; actor Jake Johnson; Phillip Phillips performs.
Journalist Meredith Vieira; comic Jim Norton; Charlie Worsham performs.
Actor Casey Affleck; actress Allison Janney.
Actress Kate Hudson; sportscaster Bob Costas; Kopecky Family Band performs.
Actor Josh Gad; Kristin Chenoweth performs.
TV personality Howie Mandel; model Marisa Miller; Sara Bareilles performs.
Actor Anthony Hopkins; comic Amy Schumer; Robert Randolph and the Family Band perform.
Actor John Malkovich; actress Olivia Munn; Blackberry Smoke performs
Comic Dane Cook; producer Nev Schulman; Matt Nathanson performs.
Actor Charlie Day; actor Jeffrey Dean Morgan; Lionel Richie performs.
Comic Wanda Sykes; TV personality Kris Jenner; India.Arie performs.
Actor Bill Hader; former New York Gov. Eliot Spitzer; Passenger performs.
Actress Jane Lynch; actor Charlie Hunnam; Serena Ryder performs.
Actress Helen Mirren; actor Ben Schwartz; The Olms perform.
Actor Zachary Levi; NASCAR driver Danica Patrick; Talib Kweli performs with Nelly and Abby Dobson.
Journalist Savannah Guthrie; comic Anthony Jeselnik.
Actor Bryan Cranston; Karolina Kurkova; Amos Lee performs.
President Barack Obama; Patti LaBelle performs.
Actor Matt Damon; actress Anna Faris; Parachute performs.
TV personality Simon Cowell; news anchor Megyn Kelly; MS MR performs.
Actor Jay Mohr; Christina Aguilera performs.
Storm chaser Jim Edds; Garth Brooks performs.
Actor Quentin Tarantino; fry it and try it with Jim Stacy; Luke Bryan performs.
Actress Kirstie Alley; wildlife specialist Ernie Brown Jr.; Switchfoot performs.
Director Tyler Perry; actor Ken Jeong; The Head and the Heart perform.
Actress Olivia Wilde; animal expert Julie Scardina; Johnny Mathis performs.
Journalist Meredith Vieira; actor JB Smoove; Jake Bugg performs.
TV host Carson Daly; magician Justin Willman; Billy Ray Cyrus performs.
Actor Kevin Hart; actress Brooklyn Decker; Chris Young performs.
Actor Jim Parsons; filmmaker John Downer; Cassadee Pope performs.
Comic Bill Cosby; actor Chris Pratt; Gary Allan performs.
Journalist Matt Lauer; comic Carrot Top; Cults perform.
Actor Casey Affleck; singer Kelly Clarkson; Lyle Lovett performs.
Actress Mariska Hargitay; Sen. Ted Cruz (R-Texas); Gavin DeGraw performs.
TV-show host Craig Ferguson; actress Jaimie Alexander; JRand and Flo Rida perform.
TV host Bill O'Reilly; chef Guy Fieri; Lee Brice performs.
Actress Kristen Bell; TV host David Gregory; Julian Lennon performs.
Country music artist Blake Shelton; TV hosts Kathie Lee Gifford and Hoda Kotb; Imelda May performs.
President George W. Bush and wife Laura Bush; Ben Harper and Charlie Musselwhite perform.
TV host Whoopi Goldberg; comic Ty Barnett; Totem from Cirque du Soleil.
Actress Christina Applegate; actor Kevin Nealon;the winner of "The Voice" Tessanne Chin performs.
Actor Sylvester Stallone; filmmaker Judd Apatow; Libera performs.
TV host Michael Strahan; baker Marjorie Johnson; Leona Lewis performs.
Comic Wanda Sykes; actor Thomas Haden Church; Dwight Yoakam performs.
Actor Dana Carvey; businessman Magic Johnson; A Great Big World performs.
Sports analyst Terry Bradshaw; model Heidi Klum; Darius Rucker performs.
Actor Matt LeBlanc; House Speaker John Boehner (R-Ohio); Dorian Holley performs.
Singer Miley Cyrus; comic Howie Mandel; Sarah McLachlan performs.
Actress Sandra Bullock; singer Blake Shelton; Vintage Trouble performs.
TV host Jimmy Fallon; actress Betty White; Bonnie Raitt performs.
Actor Tim Allen; animal handler Dave Salmoni; Sara Bareilles performs.
Actor Charlie Sheen; TV personality Joy Behar; Neon Trees perform.
Actor Adam Sandler; actress Ali Wentworth; Sheryl Crow performs.
Actress Leslie Mann; actor David Koechner; Vince Gill performs with Paul Franklin.
Actor Steve Carell; journalist Maria Shriver; Jake Clemons performs.
Actor Mark Wahlberg; comic Jeff Foxworthy; Salaam Remi and Akon performs.
Comic Louis C.K.; Sen. John McCain (R-Ariz.) and columnist Meghan McCain; Plain White T's perform.
Actress Jennifer Lopez; actor Aaron Eckhart; Comedian Adam Hunter.
TV host Chelsea Handler; journalist Bob Costas; Sharon Jones & the Dap Kings perform.
Actor Mark Harmon; figure skater Gracie Gold; Kristin Chenoweth performs.
Actress Vanessa Hudgens; businessman and investor Mark Cuban; Foreigner performs.
Actor Matt Damon; comic Larry the Cable Guy; Chris Isaak performs.
Actor Andy Samberg; actress Bailee Madison; Goo Goo Dolls performs.
TV host Ellen DeGeneres; Bill Engvall; Tired Pony performs.
Actor Liam Hemsworth; Jayma Mays; The Rides perform, featureing Stephen Stills & Kenny Wayne Shepherd.
Actress Zooey Deschanel; actor Terry Crews; Buena Vista Social Club performs.
Actor Hugh Jackman; actress Aisha Tyler; OneRepublic performs.
Actor Charlie Sheen; radio personality Jim Rome; Trombone Shorty performs.
Actress Rose Byrne; Donny Deutsch; Jennifer Nettles performs.
Actor Chris Hemsworth; actress Kristen Schaal; Sheryl Crow performs.
Actor Neil Patrick Harris; singer Demi Lovato; Five for Fighting performs.
Justin Timberlake performs; actress Paula Patton.
TV host Jimmy Fallon; mentalist Lior Suchard; Billy Currington performs.
Actor Tim Allen; professional basketball player Dwyane Wade; Fitz & the Tantrums perform.
Singer Christina Aguilera; comic Joy Behar; Valerie June performs.
Actor Martin Short; columnist Meghan McCain; Backstreet Boys perform.
TV personality Simon Cowell; comic Adam Carolla; American Authors perform.
Actor Josh Duhamel; Macklemore & Ryan Lewis perform.
Actor Jeff Daniels; TV host Sherri Shepherd; Quinn Sullivan performs.
Actor Jason Sudeikis; Fry It & Try It with Jim Stacy; KT Tunstall performs.
Actor Robin Williams; entrepreneur Mark Cuban; Gavin DeGraw performs.
Actor Matt LeBlanc; actress Kathryn Hahn; Sky Blu performs.
Animal handler Julie Scardina; Rod Stewart performs
Actor Vince Vaughn; actress Olivia Munn; Vintage Trouble performs.
Actress Christina Applegate; actor Rob Corddry; White Lies perform.
TV host Bill Maher; professional snowboarder Shaun White; Bad Things perform.
Sen. John McCain (R-Ariz.); writer Diablo Cody; Booker T. Jones and Mayer Hawthorne perform.
Actress Olivia Wilde; actor Adam Scott; Cher Lloyd performs.
Actor Dana Carvey; Cee Lo Green and Goodie Mob perform.
Actress Julia Louis-Dreyfus; author Ron Paul; Little Big Town performs.
Wanda Sykes; Richard Engel; Scotty McCreery
Actress Emma Roberts; animal handler Dave Salmoni; Diane Birch performs.
Actor Harrison Ford; TV host Piers Morgan; Daughtry performs.
Actress Kristin Chenoweth; TV personality Ross Mathews; Joan Jett & the Blackhearts perform.
Journalist Savannah Guthrie; entrepreneur Mark Cuban; Kodaline performs.
Actor Anthony Hopkins; Sting performs.
Actress Melissa McCarthy; TV host Andy Cohen; Empire of the Sun performs.
Actor Matthew McConaughey; director Eli Roth; The Fray performs.
Rality-TV star Kim Kardashian; actress Abigail Breslin; Two Door Cinema Club performs.
Actor Michael Douglas; Larry the Cable Guy; Thomas Rhett performs.
Jack Black and Kyle Gass; Rosie Perez; Tenacious D.
Actress Kathy Griffin; author Newt Gingrich; Demi Lovato performs.
Actor Joseph Gordon-Levitt; actor Jay Mohr; Ariana Grande & Mika perform.
Businessman Magic Johnson; baker Marjorie Johnson; Gary Clark Jr. performs
Actress Sandra Bullock; Gregory Porter performs.
Actress Julianne Moore; actor Billy Gardell; Stone Temple Pilots perform with Chester Bennington.
Sports analyst Terry Bradshaw; fantasy football tattoo league; Nelly performs.
Actress Lauren Graham; Political correspondent Chris Matthews; Tom Odell performs.
Comic Whitney Cummings; Ann Romney, wife of businessman and politician Mitt Romney; Lissie performs
Author Billy Crystal; TV personalities Snooki and JWoww; Toni Braxton and Babyface (Kenny Edmonds) perform.
Drew Barrymore; D. L. Hughley; the Avett Brothers.