Greg Kinnear; Lacey Brown; Michael Buble; Harry Smith
Real estate mogul Donald Trump.
Jessica Simpson; Mehmet Oz; Rod Blagojevich; Alkaline Trio.
Actress Julianna Margulies; grocery bagging champion Kyle Perry; Broken Bells perform.
Actor Matt Damon; comic Danny Bhoy; Corinne Bailey Rae performs.
Tom Hanks; Spoon; Steve Holcomb; Justin Olsen; Steve Mesler; Curt Tomasevicz.
Author Gov. Mitt Romney; actress Mia Wasikowska; figure skater Evan Lysacek presents the Top Ten list.
Actor Bill Murray; Ludacris performs.
Actress Scarlett Johansson; Daniel Merriweather performs.
Actor Ewan McGregor; comic Abby Elliott; Mumford & Sons perform.
Stupid Pet Tricks; actor Ben Kingsley; Mary J. Blige performs.
Actor Jeff Bridges; comic Joe Wong; the Soft Pack performs.
Regis and Joy Philbin; Elizabeth Banks; Benicio Del Toro.
Jennifer Garner; 2010 Sports Illustrated cover model Brooklyn Decker; singer-songwriter Sade; ``Survivor'' contestants.
Drew Brees, Sandra Bullock, and Josh Turner are the scheduled guests. Plus, the cover of the 2010 Sports Illustrated swimsuit issue is unveiled!
Actor Jamie Foxx; actress Amanda Seyfried; Robin Thicke performs.
Comic Sarah Silverman; actor Jeremy Renner; Paris Hilton presents the Top Ten list; Nneka performs.
Actor John Travolta; snowboarder Shaun White; Ben Harper and Relentless7 perform.