Tina Fey, Kenneth Branagh, Ani DiFranco

David Duchovny, Tim Gunn, Kevin Brennan

Clive Owen, Alan Alda, Dinosaur Jr.

Will Arnett, Terry Crews, Patti Scialfa

Jeff Garlin, Nicholas Art, Hot Hot Heat

Paul Giamatti, Alyson Hannigan, Bad Religion

Richard Gere, Seann William Scott, The Chesterfield Kings

Mary-Kate Olsen, Wayne Brady, Lyle Lovett

Billy Bob Thornton, Sen. Chris Dodd, Kenny Chesney

Patricia Heaton, Tiki Barber, The Used

Morgan Freeman, Cheryl Hines, KT Turnstall

Kelsey Grammer, Aries Spears, James Blunt

Brad Garrett, Joy Behar, Rogue Wave

Terrence Howard, Simon Pegg, Mystery

Meredith Vieira, Steven Wright, Ben Harper & the Innocent Criminals

Bob Costas, Jim Gaffigan, Rilo Kiley

Jamie Foxx, Heather Graham, Mike Birgbiglia

Ted Danson, Patton Oswalt, Devendra Banhart

Dwayne "The Rock" Johnson, Ed Helms, Bjork

Seth Meyers, Bret Michaels, Jose Gonzalez

Jerry O'Connell, Ken Burns, VHS or Beta

Ted Koppel, Jason Schwartzman, Dana Gould

Snoop Dogg, Connie Britton, Bloc Party

Jennifer Connelly, Fred Willard, Animal Collective

Joaquin Phoenix, Jim Gaffigan, Paramore

Mark Wahlberg, Michael Strahan, The Black Lips

Tracy Morgan, Emile Hirsch, A.J. Jacobs

Jon Bon Jovi, Eva Mendes, Klaxons

Anderson Cooper, Paget Brewster, Fionn Regan

Jake Gyllenhaal, Christina Hendricks, Ghostland Observatory

Anthony Hopkins, Joe Buck, Mute Math

John Cusack, James Lipton, Spoon

Josh Harnett, Jack McBrayer, Brother Ali

Charles Barkley, William Baldwin, Seether

Ethan Hawke, Susie Essman, Zappa Plays Zappa

Brian Williams, Roger Daltrey, Manchester Orchestra

Dane Cook, Emily Mortimer, Slash

Jerry Seinfeld, David Ortiz, Sondre Lerche

Bob Saget, Dwayne Perkins, Robert Gordon & Chris Spedding

Megan Mullally, Fonzworth Bentley, Kid Rock

Bill Maher, Jim Cramer, Mike Destefano

Hulk Hogan, Regina Hall, Nicole Atkins & the Sea

Donald Trump, Irina Markova and her performing dogs, Sia

Ice Cube, Dr. Drew Pinsky, Marah

Howie Mandel, Leigh Killian, Kate Nash

Brian Williams, David Wondrich, Doyle & Debbie

Lester Holt, Sue Johanson, Ingrid Michaelson

Tom Brokaw, Anthony Jeselnik, Bell X1

Pink, Lou Dobbs, Bettye LaVette

Chazz Palminteri, Erin Burnett, Louis XIV

Bret Michaels, Antonio Pierce, Lisa Loeb

Jim Gaffigan, Chuck Liddell, Joe Nichols

David Gregory, Travis Pastrana, Kate Walsh

Jeff Corwin, Colin Hanks, Matt Nathanson

Dr. Phil McGraw, David Borgenicht, Les Savy Fav

Shawn Thayer, Ingrid Backstrom, The Blind Boys of Alabama

Ann Curry, Mike Epps, OneRepublic

Michael Strahan, Sarah Bolger, Sheryl Crow

The Great Throwdini, Donny Deutsch, The Dillinger Escape Plan

Izabel Goulart, Len Berman, Nada Surf

Professor Peter H. Fisher, Dr. Bob Arnot, Eric Lindell

Carson Kressley, Jim DeRogatis & Greg Kot, Catherine Russell

Jim Cramer, José Andrés, Band of Horses

Matt Lauer, Ryan Reynolds, Simple Plan

Martin Short, Ray Allen, The Kooks

Neil Patrick Harris, Daniella Sarahyba, Yeasayer

Larry the Cable Guy, Tim Gunn, Jim Lauderdale

Anderson Cooper, Bill Hader, Jake Shimabukuro

Randy Jackson, Artie Lange, The Whigs

Barbara Walters, Wladimir Klitschko, Black Mountain

Nathan Lane, Michel Gondry, Secondhand Serenade

Will Arnett, Flavor Flav, Super Furry Animals

Will Ferrell, Rashida Jones, tae kwon do expert Fred Simmons

Tom Arnold, Todd Barry, Georgie James

Natalie Portman, Robert Schimmel, James Blunt

Christina Ricci, Jason Sudeikis, Shooter Jennings

Paul Giamatti, Mark 'Dr. Bugs' Moffett, Jaymay

Jonah Hill, John Tesh, Drive-By Truckers

Snoop Dogg, Carson Daly

Meredith Vieira, Harland Williams, Keith Robinson

Frank Caliendo, Cheryl Hines, The Bad Plus

Martha Stewart, Lance Krall, Billy Bragg

Ice-T, Brian Posehn, Stars

Tracy Morgan, Chris Hansen, Paul Thorn

David Schwimmer, Drake Bell, Yael Naim

Ryan Phillippe, Big Show, JB Smooth

Bob Costas, Marc Maron, Moby

Helen Mirren, yodeler Wylie Gustafson, Carbon/Silicon

John Leguizamo, George Takei, The Bravery

John Krasinski, Bode Miller, Cobra Starship

Christina Applegate, Lewis Black, Stephen Curry

George Wendt, Howard Bach, Hot Chip

Jarod Miller, David Gregory, John Oliver

Eddie Izzard, Morgan Spurlock, Tapes 'N Tapes

Sarah Jessica Parker, Eddie Izzard, They Might Be Giants

Patrick Stewart, Oliver Hudson, A.A. Bondy

Rachael Ray, Kal Penn, Grizzly Bear

Andy Richter, Jennifer Esposito, She + Him

Seth Green, Peter Greenberg, Radiohead

Amy Poehler, Danica Patrick, Dave Attell

Tina Fey, Fred Willard, Say Anything

Marisa Tomei, Anthony Anderson, Santogold

Jeff Garlin, Dax Shepard, The Kills

Gordon Ramsay, Rob Corddry, Feist

Sigourney Weaver, Darrell Hammond, Was (Not Was)

Matthew Broderick, Michelle Monaghan, Brian Turner

Patricia Heaton, Katt Williams, Thrice

Jason Lee, Eva Amurri, Galactic

Liam Neeson, B.J. Novak, The Duke Spirit

Emile Hirsch, Terrell Owens, Craig Baldo

Seth Meyers, Sophia Bush, Tokio Hotel

Jimmy Fallon, William Shatner, Gary Vaynerchuk

Steve Carell, Alyson Hannigan, Duffy

Brian Williams, Leighton Meester, The Black Keys

Seth MacFarlane, Carlos Mencia, MGMT

Alan Alda, John Cena, Everest

Kevin Nealon, Mary McCormack, DeVotchKa

Denis Leary, Anthony Bourdain, Mates of State

Harrison Ford, Eric McCormack, Atmosphere

Kevin Spacey, Cynthia Nixon, Brian Kiley

Kristin Davis, Ira Glass, Ryan Bingham

The Strike Beard Show

Jon Bon Jovi, Eva Mendes

Seann William Scott, Tim Meadows, The Raconteurs

Colin Firth, Hugh Rowland, Jackie Greene

Adam Sandler, Werner Herzog, Jewel

Wanda Sykes, Emmanuelle Chriqui, Lewis Black

Kim Cattrall, Matt Taibbi, Lightspeed Champion

Kate Hudson, Robert Smigel, James Hunter

Jeff Corwin, Mario Lopez, Jamie Lidell

Mark Wahlberg, Louis C.K., Sharon Jones and The Dap-Kings

Randy Jackson, Piper Perabo, Forever the Sickest Kids

Michael Strahan, D.L. Hughley, Brian Scolaro

Ann Curry, Mario Batali, The Lordz

Megan Mullally, Brittany Snow, Detroit Octane

Mike Myers, Jordana Spiro, Dolphina

Anne Hathaway, Romany Malco, My Morning Jacket

Jason Bateman, Masi Oka, Alejandro Escovedo

Ted Koppel, Emily Mortimer, Steel Train

Selma Blair, Sig Hansen, Little Jackie

Kyra Sedgwick, Jim Cramer, Joe Cocker

Al Roker, Paul Pierce, Pilobolus

Sean Hayes, Ed Helms, Tom Papa

Gary Oldman, Joe Buck, Kenny Chesney

Heidi Klum, Joel McHale, Daryl Hall & K.T. Tunstall

Seth Green, Russell Brand, Eugene Mirman

Aaron Eckhart, Caroline Rhea, Dr. Dog

Senator John McCain and The Steeldrivers

Carson Kressley, Keke Palmer, The Ting Tings

Jason Sudeikis, Dr. Wladimir

Kevin Costner, Maria Bello, Yuto Miyazawa & Gogol Bordello

Nathan Lane, Dylan Ratigan, Missy Higgins

Brendan Fraser, Steve Schirripa, The Airborne Toxic Event

America Ferrera, Judd Apatow, Dwayne Perkins

Seth Meyers, Sharon Osbourne, N*E*R*D

Javier Bardem, Danny McBride, The B-52s

Seth Rogen, Philippe Petit, Al Green

Kiefer Sutherland, Jim Gaffigan, Mason Jennings

Daniel Radcliffe, Steve Coogan, The Hold Steady

Vin Diesel, Dave Attell, The Virgins

Tiger Woods, Vanessa Minnillo, Jimmy Carr

Aaron Peirsol, Anthony Anderson, Lykke Li

Bob Costas, Sophia Bush, The Spring Standards