Madonna, Harry Connick Jr., a Top Ten List presented by the New York Rangers

Woody Harrelson, Kim Kardashian

Larry David, Tom Russell

Steve Martin, Lea Michelle

Paul Shaffer, Eliza Dushku, KISS

Vince Vaughn, Carey Mulligan, Rosanne Cash

Kristin Davis, Barry Sonnenfeld

Jon Hamm, Andy Kindler, Brett Dennen

Garry Shandling, Kaley Cuoco, Tim McGraw

Sienna Miller, Aziz Ansari, Dead by Sunrise

Tina Fey, Chris "Mad Dog" Russo, Mika

Don Rickles, Built to Spill

Uma Thurman, Tim McGraw

Charles Barkley, Cheryl Hines, Harper Simon

Courteney Cox, William Knoedelseder, Florence and the Machine

Patrick Dempsey, Bud Selig, Sting

Tom Hanks, Weezer, a Top Ten List presented by Chad Ochocinco

Regis Philbin, Brian Regan, Weezer

Julia Louis-Dreyfus, Guy Fieri, Carrie Underwood

Al Gore, Brad Paisley, a Top Ten List presented by Michael Buble

Bill Cosby, Ryan Bingham

Bill Maher, Gabourey "Gabby" Sidibe, Keith Urban

Ricky Gervais, Brian Regan, Ralph Stanley

Bill Murray, Gabourey "Gabby" Sidibe

Jack Hanna, Shakira

Kate Walsh, Norah Jones

Kid Scientists, Amanda Peet, the Cribs with Johnny Marr

Mariah Carey

Sharon Stone, Seth Meyers

Penelope Cruz, the Script

Stupid human tricks, Robert Pattinson, Ray Davies

Stephen Colbert, John Mayer

Viggo Mortensen, Lyle Lovett

Robin Williams, Ashley Greene

Zac Efron, Carrie Fisher, Rihanna

Natalie Portman, Adam Lambert

Barbara Walters, Anna Kendrick

Ray Romano, Blackroc

Rachel Weisz, Rob Thomas

Kate Hudson, Dr. James Hansen, Tori Amos

Kyra Sedgwick, Brian Scott McFadden, Joe Perry

Hugh Grant, Zoe Saldana, Alicia Keys

Sarah Jessica Parker, Leona Lewis

Robert Downey Jr., Kris Allen

Robert Downey Jr., Kris Allen

Cate Blanchett, Tom Dreesen