Nicolas Cage, Anna Torv, Terrence Howard
Dr. Phil McGraw, Tilda Swinton, Tricky
Robin Williams, Shannen Doherty, Duffy
John Malkovich, Hayden Panettiere, Steve Earle
Keira Knightley, Thomas L. Friedman
Jada Pinkett Smith, Chris Russo, Michael Buble
Sen. Barack Obama, LeBron James
Jessica Simpson, Jack Hanna
Meg Ryan, Ricky Gervais
Bill Clinton, Chris Rock
Julianne Moore, Tom Dreesen & Tim Reid, Kings of Leon
Keith Olbermann, Chandra Wilson, Delta Goodrem
Paris Hilton, Usain Bolt, Morningwood
Lance Armstrong, Kristen Wiig, TV on the Radio
Julia Louis-Dreyfus, Michael Cera, Pete Seeger
Anne Hathaway, Josette Sheeran, The Virgins
Kate Walsh, Barry Sonnenfeld, Darius Rucker
Calista Flockhart, Bill Hader, Lucinda Williams
Brian Williams, Tim Robbins
Russell Crowe, Sarah Vowell, The Pretenders
Debra Messing, John Carter, Tegan & Sara
Dennis Quaid, Sarah Chalke, Buddy Guy
Bill Murray, Beck
Jeremy Piven, Elizabeth Banks, Lou Reed
Sarah Silverman, the Teutuls, Ra Ra Riot
Josh Brolin, Amy Sedaris, Blues Traveler
Martin Short, Marv Albert
Sen. John McCain, Ne-Yo
Tina Fey, Frank Caliendo, Tim Montana
Bill O'Reilly, Lauren Conrad
Regis Philbin, James Taylor
Alec Baldwin, Paul Mooney, Ryan Adams
Ashley Olsen, Paul Rudd, John Legend
Marcia Cross, Alan Zweibel
Paris Hilton, Elvis Costello, Jenny Lewis, a Top Ten List by Ricky Gervais
Tom Brokaw, Vera Farmiga
Ben Stiller, Q-Tip
Natalie Portman, Artie Lange, Brad Paisley
Ted Turner, Jamie Oliver, Taylor Swift
Don Rickles, Amy Brenneman, Alicia Keys
Russell Brand, Charlie Haden
Bruce Willis, Sia
Bill Cosby, Matt Braunger
Emma Thompson, Michelle Felicetta, Purple Reign
Carla Bruni Sarkozy, Jack Hanna, Cold Hard Cash
Katie Couric, Dev Patel, Mr. Brownstone
Stephen Colbert, Kristen Stewart, Super Diamond
James Franco, Bruce McCall, The Allstarz
Nicole Kidman, Simon Baker, Kanye West
Reese Witherspoon, Harry Connick Jr.
Teri Hatcher, Ludacris
Denis Leary, John Mayer
Tom Arnold, Faith Hill
Jennifer Connelly, Anderson Cooper, The Duke Spirit
Amy Adams, Michael Sheen, Jamey Johnson
Keanu Reeves, Paula Abdul, Loudon Wainwright III
Sen. John McCain, Bon Iver
Meryl Streep, Jeff Altman
Adam Sandler
Tom Cruise, Fall Out Boy
Jennifer Aniston, Broken Social Scene
Will Smith, Of Montreal
Jerry Seinfeld, Leona Lewis
Dustin Hoffman, Todd Rundgren
Jay Thomas, Mickey Rourke, Darlene Love
Tracy Morgan, Matt Braunger
Kate Hudson, Glasvegas
Kevin James, Becky Quick, Erin McCarley
Ricky Gervais, Rose Byrne, Okkervil River
Kate Winslet, Marv Albert
Kiefer Sutherland, Wendy Liebman
Billy Crystal, Kara DioGuardi
Salma Hayek, Jimmie Walker
Clint Eastwood, Randy Rogers Band
Kyra Sedgwick, Gwen Ifill
Zach Braff, Arj Barker, The Airborne Toxic Event
Brian Williams, Ben Kweller
Evangeline Lilly, Seth Meyers, Andrew Bird
Lauren Graham, Guy Fieri, MENEW
Renee Zellweger, Tony Dungy, Graham Nash sits in with the band
Mary Hicks, the Gaslight Anthem
Ben Roethlisberger, Steve Martin
Rod Blagojevich, Richard Jenkins
Joe Torre, Demetri Martin, Lyle Lovett and John Hiatt
Isla Fisher, extreme fisherman Matt Watson, Mark Olson and Gary Louris, a Top Ten List presented by Lil' Wayne
Dakota Fanning, Keith Alberstadt, Beirut
Naomi Watts, Danny McBride, 2009 Sports Illustrated Swimsuit Issue cover reveal
The crew of US Airways "Miracle On The Hudson" Flight 1549, Heartless Bastards
Joaquin Phoenix, Bar Refaeli, Anthony Hamilton
Chris Russo, the Jonas Brothers, Ashford & Simpson
Martha Stewart, Jake Johannsen, Matt Nathanson
Ellen Pompeo, Daytona 500 winner Matt Kenseth, Willie Nelson with Asleep at the Wheel
Bonnie Hunt, M. Ward
Donald Trump, Antony and the Johnsons
David Spade, Jeffrey Sachs, David Sanborn with Sam Moore
Barbara Walters, Mike Birbiglia, Shemekia Copeland
Katie Couric, U2
Felicity Huffman, Artie Lange, U2
Dr. Phil McGraw, U2
Jon Stewart, U2, a Top Ten List featuring 10 Team USA members from the World Baseball Classic
Jason Segel, Brian Kiley, U2
Russell Brand, Jack Hanna
Stupid Pet Tricks, Paul Rudd, Razorlight
Tom Brokaw, An Horse
Andy Samberg, Paul Teutul Sr., the Broadway cast of "West Side Story"
Will Ferrell, Cursive
Nicolas Cage, Rachel Maddow
Julia Roberts, Bell X1
Craig Ferguson, Ginnifer Goodwin, Modest Mouse
Billy Crystal, Kara DioGuardi, a Top Ten List presented by Owen Wilson
David Spade, Richard Zoglin, David Sanborn and Sam Moore
Hugh Laurie, Bloc Party
Mary Tyler Moore, Blake Lively, White Lies
Christina Applegate, Jim Gaffigan, Jesse Harris with Norah Jones
Seth Rogen, Tom Dreesen, Adele
Bill O'Reilly, Marianne Faithfull
Marg Helgenberger, Francisco Palacios, Ray LaMontagne
Michael J. Fox, the Fray
Denis Leary, Diana Krall
Zac Efron, Mike Golic and Mike Greenberg, A.C. Newman with Nicole Atkins
Kelly Ripa, Bill Scheft, Yeah Yeah Yeahs
Drew Barrymore, Jack McBrayer, Neko Case
Matthew Perry, Elisha Cuthbert, Rascal Flatts
Russell Crowe, Joe Wong
Jeff Goldblum, Jeff Dunham
Nathan Lane, Tinted Windows
Beyonce, Jim Parsons
Jamie Foxx, Lauren Conrad, the Dead
Michael Keaton, Lily Allen
Matthew Fox, Carol Leifer, the All-American Rejects, a Top Ten List presented by Matthew Stafford
Dolly Parton, Zachary Quinto
Jennifer Garner, Tesla Motors CEO Elon Musk, Manchester Orchestra
Regis Philbin, a performance by the Broadway cast of "Hair"
Kiefer Sutherland, Jim Norton, Bat for Lashes
Gordon Ramsay, Chris Pine, Keri Hilson with Kanye West
Liev Schreiber, Dr. Sanjay Gupta, Franz Ferdinand
Bruce Willis, Ben Harper & Relentless7
Norm MacDonald, a Top Ten List presented by Leonard Nimoy, Animal Collective
Matthew Broderick, Brian Regan, Chris Cornell
Tom Hanks, the Killers
Alec Baldwin, Maya Rudolph, Chrisette Michele
Robin Williams, Wynton Marsalis
Kid Scientists, Teri Hatcher, Rick Ross with Magazeen, a Top Ten List presented by Ron Howard
John Goodman, Tommy Tiernan, Mastodon
Ben Stiller, White Rabbits
Jane Fonda, Piedmont Bird Callers, Kenny Chesney
Stephen Colbert, General Motors Vice Chairman Bob Lutz, Grizzly Bear
Amy Sedaris, Ed Helms, Jean Redpath
Ricky Gervais, Green Day
Bill Cosby, Helio Castroneves, Melody Gardot
Jack Hanna, John Krasinski
Jessica Biel, Zach Galifianakis, Steve Earle
Elvis Costello, a Top Ten List presented by Neil Patrick Harris
Paris Hilton, Calvin Borel, Steven Wright
Howard Stern, Mos Def
Julia Roberts, Black Eyed Peas
Kathy Griffin, Stupid Human Tricks, Sonic Youth, an NBA Finals report by Phoenix Suns' Steve Nash
Denzel Washington, the Jonas Brothers, a Top Ten List with Regis Philbin
Sandra Bullock, Pete Correale, P.J. Harvey & John Parish
Jack Black, M.A. Sanjayan
Michelle Pfeiffer, Judah Friedlander, Ian McLagan & the Bump Band
Ryan Reynolds, Padma Lakshmi, the Eels
Danny DeVito, Bear Grylls, Phoenix
Jada Pinkett Smith, Michael Cera, the Sounds
Samuel L. Jackson, Emeril Lagasse, Iggy Pop & the Brighton Port Authority
Sandra Day O'Connor, MSTRKRFT with John Legend, a Top Ten List presented by Lucas Glover
Ray Romano, St. Vincent
Johnny Depp, Megan Fox
Martin Short, Regina Spektor
Serena Williams, Hayden Panettiere, Conor Oberst and the Mystic Valley Band
Sacha Baron Cohen, Joel McHale
Queen Latifah, Emma Watson
Daniel Radcliffe, Veronika Part, Levon Helm, a Top Ten List presented by Bruno
Rainn Wilson, Larry Miller, Maxwell
Jonah Hill, Gar Ryness, Kelly Clarkson
Edie Falco, Michael Showalter, Wilco with Feist
Paul McCartney, a Top Ten List presented by Bruce Willis
Anderson Cooper, Anna Paquin, Grizzly Bear
Tom Arnold, Metric, a Top Ten List presented by Dave's mom Dorothy
Katherine Heigl, Jeff Altman, Spinnerette
Kevin Spacey, Jesse James, the Flatlanders, a Top Ten List presented by Stewart Cink
Tracy Morgan, Leslie Mann, Diane Birch
Sean "Diddy" Combs, Vera Farmiga, Ginuwine with Missy Elliott
Amy Poehler, Nick Griffin, Judy Collins
Eric Bana, Dave Matthews Band, a Top Ten List presented by Chicago White Sox star Mark Buehrle
Katie Couric, Silversun Pickups
Amy Adams, Tom Dreesen, Elbow
Adam Sandler, Cage the Elephant
Regis Philbin, Ted Alexandro, Dave Matthews Band
Quentin Tarantino, Eric Ripert, Robert Cray
Donald Trump, Diane Kruger, Billy Currington, a Top Ten List presented by Britney Spears
Mike Myers, Ken Burns
Anna Wintour, Mark Teixeira
Renee Zellweger, Gary Mule Deer
Christina Applegate, Brendan Benson, Patton Oswalt
Mary-Louise Parker, Eugene Levy, Jet
Anne Heche, Jim Parsons, Care Bears on Fire
Andy Roddick, Rachael Ray, Mutemath
Artie Lange, Todd Barry, Imogen Heap
