Bill Maher
Jerry Seinfeld, Jay-Z with Rihanna & Kanye West
Michael Moore, Tom Cruise, Cameron Diaz
Robin Williams, Miley Cyrus
Halle Berry, Bruce Hornsby with Eric Clapton
Drew Barrymore, Mel Gibson
Jennifer Garner, Barney Frank, Headlines
Pee-Wee Herman, Amy Poehler, 99 Cent Store
Vince Vaughn, Michaels vs. Costas
Rush Limbaugh, Smokey Robinson with Joss Stone
Hugh Laurie, LeBron James
Bill Maher, Brad Paisley & Sheryl Crow
Julia Louis-Dreyfus, Billy Crystal
Adam Carolla, Steve Carell, Vince Gill & Emmylou Harris
Chris Rock
Jenna Fischer, Dan Ahdoot, Photo Booth
Jamie Foxx, Joe Torre
Abigail Breslin, Cindy McCain
Wanda Sykes, Kathleen Sebelius
Gerard Butler, Ben Harper & Jack Black
Terry Bradshaw
Dana Carvey
John C. Reilly, Ben Roethlisberger
Mikey Day, Bill Cosby
Matt Lauer, Jeff Dunham
Ross Mathews, Sen. John McCain
Rod Stewart
Martha Stewart, Ludacris
Rainn Wilson
Hilary Swank, Jerry Jones
Colin Firth
Dr. Phil McGraw
Ewan McGregor, Tina Fey
Chelsea Handler, Brian Williams
Paula Abdul
John Cusack, Frank Caliendo
Mariah Carey, a performance from Cirque du Soleil's
Katie Featherston & Micah Sloat
Jenna Bush Hager, Laura Bush
Wanda Sykes, Rachael Ray, Dan Finnerty & the Dan Band
Elizabeth Banks
Kathy Griffin
Howie Mandel
Sandra Bullock
Penelope Cruz, Dolly Parton
Terrence Howard, Terry Bradshaw
Taylor Lautner, Heather Locklear
The Biggest Loser Rebecca Meyer, Kevin Nealon, Tyra Banks
Larry the Cable Guy, Mikey Day
Dakota Fanning, Kate Flannery, Jeff Dunham, Mikey Day
Kellan Lutz, Ed Begley Jr.
Gov. Arnold Schwarzenegger, Lady Gaga
Charles Barkley, The Biggest Loser contestant Allen Smith
Paula Patton
Megan Fox
John Travolta, Kim Kardashian
Morgan Freeman, Maxwell, Nick Thune
Kelsey Grammer, Taylor Swift
Susan Sarandon, Andrea Bocelli with the Muppets
Gabourey Sidibe, Winner of The Biggest Loser Danny Cahill
Quentin Tarantino, Drew Brees
Matt Damon, Barry Manilow
Gordon Ramsay
Anna Kendrick, Tim McGraw
Christina Applegate, Nick Lachey
Sigourney Weaver, John Mayer
Sam Worthington, Mary J. Blige
Glenn Beck, Kate Gosselin
Jeff Bridges, Adam Lambert
Dane Cook
Julie Scardina, African Children's Choir
Tim Allen
Kim Kardashian, Jillian Michaels, Guy Fieri
Hugh Jackman, Katie Couric
Denzel Washington
Brian Williams
Bill Cosby
Heidi Klum
Dwayne Johnson
Julianne Moore
Emily Blunt
Chelsea Handler
James Cameron
Billy Crystal
Mark Harmon
Mel Gibson
Bill Paxton
Jessica Alba
Jessica Biel
Wanda Sykes
Bill Maher, Gretchen Bleiler
Emma Roberts, Charles Barkley
Series Finale: Ashton Kutcher, Bob Costas, Gabourey Sidibe
