Former President Bill Clinton, Patti Scialfa
Danny DeVito, Larry David, Avril Lavigne
Jessica Alba, George Saunders, The Manchester Orchestra
Rachael Ray, Frank Rich, Arctic Monkeys
Jodie Foster, Glen Hansard & Markéta Irglová
Dr. Phil McGraw, Andy Kindler, Suzanne Vega
Viggo Mortensen, Kat Von D, Daughtry, a Top Ten List presented by 10 NASCAR stars
Martha Stewart, Fred Willard, a Top Ten List presented by Billy Bob Thornton
Regis Philbin, Chamillionaire
Jamie Foxx, Jimmy Smits, Will.I.Am
Kate Walsh, Kevin Smith, Rascal Flatts
Jennifer Garner, Ken Burns, Chaka Khan
Stupid Human Tricks, Whoopi Goldberg, Melissa Etheridge
Paris Hilton, Emile Hirsch
Sean Penn, Barry Sonnenfeld, Ben Harper
Jude Law, Sarah Silverman, John Fogerty
Alec Baldwin, Faith Hill
Nicolette Sheridan, Tony Snow, Rihanna
Bob Newhart, Angela Kinsey, Iron and Wine
George Clooney, Kid Rock
Jennifer Lopez, Alan Greenspan
Stephen Colbert, Eva Mendes, Queens of the Stone Age
Anne Heche, Sue Johanson, Mariza
Halle Berry, Bill Hader, Spring Snake Symphony
Jake Gyllenhaal, Connie Britton, 50 Cent
Richard Simmons, Casey Affleck, Sondre Lerche
Rebecca Romijn, Jimmie Walker, LeAnn Rimes
Steve Carell, Chris Russo, Chris Elliott, Band of Horses
Amanda Peet, Patrick Warburton, Jeff Caldwell
Jerry Seinfeld, Joe Torre
Jennifer Connelly, Slash, Nicole Atkins
David Spade, Penn & Teller, Jonathan Papelbon
Dr. Phil McGraw, Ryan Adams
Bill Murray, Jay-Z
Robin Williams, Lupe Fiasco
Bill Maher, Ellen Page, the cast of Broadway's "Young Frankenstein"
Donald Trump, Shooter Jennings
Tom Hanks, Gov. Mike Huckabee
Lucy Liu, Alex Roy, MGMT
Morgan Freeman, Tom Brokaw, Chuck Prophet
Howard Stern, Ayo
Tracy Morgan, Kat Von D, Dropkick Murphys
Katie Holmes, Frank Caliendo, Maroon 5
Denzel Washington, Don Rickles
Michael Douglas, Katherine Heigl, Wyclef Jean
Sylvester Stallone, the Teutul family, the Mars Volta
Diane Keaton, Jim Gaffigan
Sarah Michelle Gellar, Dan Patrick, Ringo Starr
Sen. John Edwards, Diablo Cody, Josh Ritter, David "Fathead" Newman
Charles Grodin, New York Giant Lawrence Tynes, The Redwalls
Julia Louis-Dreyfus, T.J. Miller, Super Furry Animals
Nathan Lane, Jake Johannsen
Jessica Alba, Julie Chen, The Whigs
Bill Cosby, Lake Bell, The Matt Savage Trio
Dr. Phil McGraw, Lena Headey, Gary Allan
Stupid Human Tricks, Eva Longoria Parker, Colbie Caillat
Paris Hilton, Artie Lange, Vampire Weekend
Sen. Hillary Clinton, Sheryl Crow
Matthew McConaughey, Gary Mule Deer, Sheryl Crow
Eli Manning, Vince Vaughn, A Fine Frenzy
Kate Hudson, Jack Hanna
Colin Farrell, Blake Lively, Lenny Kravitz
Kate Walsh, Jason Sudeikis, OK Go and Bonerama
Evangeline Lilly, Marisa Miller, Brad Paisley
Martin Short, Amy Ryan
Regis Philbin, Joseph Arthur
Charles Barkley, Bill Burr
Dennis Quaid, Ryan Newman, Sharon Jones and the Dap-Kings
Randy Jackson, Saffron Burrows, Ray Davies
Amy Sedaris, Erika Jensen, Foo Fighters
Steve Martin, hand shadows performance with Raymond Crowe
Diddy, Al Lubel
Will Ferrell, Michael McDonald
Courteney Cox, Thomas Friedman, Chingy with Ludacris
Kid Scientists, Natalie Portman, Kenna
Amy Adams, Jamie Oliver, Liam Finn
Woody Harrelson, Tommy Tiernan
Jim Carrey, Paula Abdul
Martha Stewart, Snoop Dogg
Charlize Theron, Lewis Black, British Sea Power
Kate Beckinsale, Graham Colton
Jaime Pressly, Brian Regan
Rainn Wilson, Mike Golic & Mike Greenberg, Bell X1
Al Franken, Lauren Conrad, The Cribs
Brooke Shields, Seth Meyers, Gutter Twins
Demi Moore, Anthony Bourdain, Counting Crows
Kate Bosworth, John Witherspoon, The Raveonettes
Brian Williams, Judy Greer, Langhorne Slim
Helen Mirren, Jose Canseco
Sen. John McCain, Cat Power
George Clooney, Norah Jones
Renee Zellweger, Gayle King, Paddy Casey
Ellen Pompeo, Jay-Z, Mary J. Blige
Al Pacino, David Wright
Kelsey Grammer, Kristen Bell, Rogue Wave
Uma Thurman, Graham Rahal, The Gossip
Kelly Ripa, Dr. John P. Holdren, The Black Keys
Amy Poehler, Jason Segel, Jordan Zevon
Billy Crystal, Maria Sharapova
Helen Hunt, Chris "Mad Dog" Russo, Kathleen Edwards
Danica Patrick, Russell Brand, Tokyo Police Club
Tina Fey, Brett Favre, Estelle
Craig Ferguson, Ira Glass, The Black Crowes
Gwyneth Paltrow, Richard Lewis, The Roots with Chrisette Michele
Robert Downey Jr., Alicia Keys
Matthew Broderick, Heidi Montag, Josh Groban
John Goodman, Bear Grylls, Robyn
Patrick Dempsey, Isabella Rossellini, Nick Lowe
Jimmy Kimmel, Lance Burton, Jimmy Eat World
Ashton Kutcher, Mac King, Steve Winwood
Emile Hirsch, Tom Dreesen, Dirk Arthur
Paris Hilton, Steve Wyrick, Panic at the Disco
Barbara Walters, Cobie Smulders, Penn & Teller
Stupid Pet Tricks, Shia LaBeouf, N.E.R.D.
Regis Philbin, Laura Dern, Death Cab for Cutie
Jack Hanna, Kid Rock
America Ferrera, Russell Brand, Terry Fator
Teri Hatcher, Robert F. Kennedy Jr.
Kevin Spacey, Sen. Jim Webb, Sara Bareilles
Harrison Ford, Ali Lohan, Leona Lewis
Kristin Davis, Jimmy Buffett
Sarah Jessica Parker, Piedmont Bird Callers, Republic Tigers
Liv Tyler, Sue Johanson, Tommy Johnagin
Adam Sandler, Scott Dixon, Donna Summer
Julianne Moore, Morgan Spurlock, a performance from the Broadway musical "South Pacific"
Jack Black, Esperanza Spalding
Julia Roberts, Al Green
Jenna Fischer, Jim Nantz, Gavin Rossdale
Tom Brokaw, Elettra Wiedemann, Gnarls Barkley
Mark Wahlberg, Jeff Peckman, Alanis Morissette
Zooey Deschanel, Scott McClellan, Jakob Dylan
Ben Kingsley, Artie Lange, Emmylou Harris
Whoopi Goldberg , Spencer Pratt, Nick Griffin
Mike Myers, BMX star Kevin Robinson, Adele
Steve Carell, Lance Armstrong, Dr. John
Kevin Garnett & Ray Allen, Jane Krakowski, Martha Wainwright
Jason Bateman, Teri Garr, Keyshia Cole
Denis Leary, The Baseball Project
Will Smith, Joe Buck
Charlize Theron, Richard Belzer, Mötley Crüe
Abigail Breslin, Barry Sonnenfeld, Tift Merritt
Mary-Kate Olsen, Jim Gaffigan, Gavin DeGraw
Morgan Freeman, Kaley Cuoco, Wild Sweet Orange
Pierce Brosnan, Bud Selig, Jason Mraz
Meryl Streep, Aaron Eckhart, Randy Travis
Maggie Gyllenhaal, Neil Young, The Hold Steady
Ricky Gervais, John Mellencamp
Rosie Perez, David Sedaris
Will Ferrell, Adam Savage & Jamie Hyneman
Amanda Peet, Jon Hamm, Augustana
John C. Reilly, Jane Mayer, Grizzly Bear
David Duchovny, Black Kids
Nathan Lane, Larry "Bubbles" Brown, Randy Bachman
Gillian Anderson, Simon Pegg, We Are Scientists
Kevin Costner, Bob Sarlatte, Low vs. Diamond
Pamela Anderson, James Franco, Atmosphere
Luke Wilson, Mindy Kaling, Michael Lauziere
Richard Simmons, Mary-Louise Parker
Seth Rogen, Fleet Foxes
Kelly Ripa, Steve Coogan, Spiritualized
Penelope Cruz, Danny Way, Randy Newman
Kiefer Sutherland, Rumer Willis, Phil Vassar
Donald Trump, Dwayne Kennedy
Shawn Johnson, Tracy Morgan, Solange
Bryan Clay, Don Cheadle, Little Anthony & The Imperials
Kerri Walsh & Misty May-Treanor, Neil Patrick Harris, Nas
Brad Garrett, Blake Lively, Randy Houser
Amy Sedaris, Kim Kardashian, Brian Regan
