Cate Blanchett, Jay Thomas, Darlene Love

Tom Brokaw, Cold War Kids

Renée Zellweger, holiday toy demonstration, Taking Back Sunday

Beyonce, Marv Albert, The Dears

Frank Caliendo as John Madden, Ben Stiller, Rodrigo & Gabriela

Clint Eastwood, Matthew Fox

Will Smith, Evanescence

Kid Scientists, Regis Philbin, Robert Randolph

Howard Stern, Gwen Stefani

Matt Damon, Barbara Walters

Danny DeVito, 16-year-old duct tape expert William Beacom, Silversun Pickups

Jennifer Connelly, Tom Dreesen, Shiny Toy Guns

Richard Simmons, Kate Walsh, Ciara

George Clooney, The Decemberists

Kate Winslet, Tom Waits

Helen Hunt, DJ Shadow, Q-Tip and Lateef

Eugene Levy, John Mayer

Matthew Broderick, Lupe Fiasco & Jill Scott

Hugh Jackman, Chris Elliott, Jimmie Johnson

Jerry Seinfeld, Dan Patrick

Sen. John Edwards, Kevin Pollak, Will Arnett

Christopher Guest, Frank Caliendo, The Game

Ellen DeGeneres, Gordie Brown, +44

Jack Black & Kyle Gass, Fred Travalena, Tenacious D

Robin Williams, Rich Little, George Jones

Daniel Craig, documentary film subject Teri Horton, Elvis Costello, Rosanne Cash

Kiefer Sutherland, Jenna Fischer, Rocco DeLuca

Dustin Hoffman, Jamie Oliver, The Metropolitan Opera

Will Ferrell, Jack Hanna

Martin Short, Kinky Friedman

Rosie O'Donnell, Lady Sovereign

Gary Sinise, Joanne Carson, Jim Norton

Rachel Weisz, David Rakoff, Morningwood

Borat, Tiki Barber, Beck

Bill O'Reilly, Jeff Altman, Tilly and the Wall

Tim Robbins, Gene Rurka, Russell Thompkins Jr. and The New Stylistics

Julia Louis-Dreyfus, Jay Thomas, John Legend

Tina Fey, Mike Golic & Mike Greenberg, The Killers

Tom Arnold, Brian Regan, the latest "Survivor: Cook Islands" castaway

Diddy, Neil Patrick Harris

Katie Couric, Brian Kiley, Alan Jackson

Jon Stewart, Nick Lachey

Nicky Hilton, Bob Woodward, Joseph Arthur

Robin Williams, J.P. Calderon, Sam Moore with Wynonna

Amy Sedaris, Trey Anastasio

Frank Caliendo, Rachael Harris, Xzibit, Phil Pfister

Alec Baldwin, Vladae the Dog Wizard, Jerry Lee Lewis & Neil Young

Andy Dick, Keith Olbermann, Brazilian Girls

Pete Rose, Roy Wood Jr., Cecilia Mansilla

Nathan Lane, Jeff Caldwell

Sir Richard Branson, Dane Cook, Monica

Amanda Peet, Nigella Lawson, Bob Seger

Billy Bob Thornton, Lily Capehart, Sean Lennon

Ray Liotta, Elvis Costello & Tony Bennett, Billy Garcia

LeBron James, Todd Oliver and Irving, Ludacris

Ted Turner, Jeff Dunham and Walter, Fergie

Marg Helgenberger, Ronn Lucas and Scorch, Diana Krall

Patrick Dempsey, Jay Johnson and Darwin, Kasabian

Dr. Phil McGraw, Willie Tyler and Lester, Sekou Bunch

Johnny Knoxville, Rachael Ray

Anne Heche, Luke Ravenstahl, The Who

Dwayne "The Rock" Johnson, Norm MacDonald

Ashton Kutcher, Sam Hornish, Jr., TV on the Radio

Maria Sharapova, Martha Stewart, Justin Timberlake

Al Franken, Todd Snider

Julianne Moore, radio-show hosts Opie and Anthony

Snoop Dogg, Charlie Hill, OK Go

Zach Braff, Jeff Brendenburg, The Roots

Andy Kindler, motocross demo with Travis Pastrana, Baby Gramps

Maggie Gyllenhaal, Albert Pujols

Mark Wahlberg, Ruth Regina, M. Ward

John McEnroe, Artie Lang, Busta Rhymes

Chris Elliott, Rep. Nancy Pelosi, Razorlight

Julianna Margulies, Andy Sansone, Outkast

Edward Norton, Greg Fitzsimmons

Whoopi Goldberg, sock puppeteer Jack Fisett, Fatboy Slim

Jessica Biel, Christina Aguilera

Hilary Duff, Jason Randal, Dirty Pretty Things

Samuel L. Jackson, Gnarls Barkley

Jamie Foxx, Tom Dreesen

Johnny Depp, the Spinners

Scarlett Johansson, Paul Teutul Jr. and Sr.

Greg Kinnear, reptile expert Dr. Darrel Frost, Tapes 'n Tapes

Colin Farrell, India.Arie

Donald Trump, Nick Griffin, Sam Roberts

Martin Short, Pink

Uma Thurman, Morgan Spurlock, egg catchers Brad Freeman and Patrick Breault

Regis Philbin, Bryce Dallas Howard

Kate Hudson, Patrice O'Neal

Anderson Cooper, Greg Fitzsimmons

Luke Wilson, Band of Horses

Denis Leary, New York Met David Wright, the Wreckers

Paul Reubens, Yunjin Kim, Nelly Furtado

John Witherspoon, The Fray

Tom Brokaw, Paul Simon

Johnny Depp, Broken Social Scene

Robert Downey Jr., Fred Willard, Martha Wainwright

Anne Hathaway, Jim Gaffigan, Dashboard Confessional

Kevin Spacey, The Streets

Al Gore, Rock Kills Kid

Meryl Streep, Yellowcard

Dwyane Wade, Amy Sedaris, Morningwood

Nicole Richie, Brandon Routh

Adam Sandler, Julie Chen

Robert Duvall, Tommy Tiernan, Sonic Youth

Sandra Bullock, Widespread Panic

Stephen Colbert, Mark Cuban, Neko Case

Tim Russert, Cat Power

Paris Hilton, Will Shortz

Michael Keaton, Wolfmother

Meredith Vieira, Jeremy Piven, My Morning Jacket

Kyra Sedgwick, Al Franken

Bonnie Hunt, Elvis Costello, Allen Toussaint

Lindsay Lohan, Sam Hornish Jr.

Bill Maher, Rita Wilson

Halle Berry, Harold Perrineau, Jesse James

Jennifer Aniston, Rob Zombie

Martin Short, James Blunt

Martha Stewart, Dixie Chicks, Criss Angel

Jennifer Garner, Harry Hill

Stupid Pet Tricks, Rebecca Romijn, Eagles of Death Metal

Bruce Willis, Goldfrapp

Debra Messing, Chris Russo

Kid Scientists, William Shatner, Angels & Airwaves

Edie Falco, Pete Correale, Van Hunt

Teri Hatcher, Tom Dreesen, Michel Lauziere

Jason Lee, Jack Hanna

Kurt Russell, The Little Willies

Derek Jeter, Michelle Monghan, Barnum & Bailey Circus

Vince Vaughn, K.T. Tunstall

Julia Roberts, Pearl Jam

Rosie Perez, Danica Patrick

Tom Cruise, Jamie Oliver

Tom Hanks, Kanye West

Kerri Russell, Jerry Lee Lewis, Human Cannonball Team

Piedmont Bird Callers, Michael Douglas, Emmylou Harris, Mark Knopfler

Craig Furguson, Alexis Bledel, Tom Russell

Jane Fonda, Shooter Jennings

Eva Longoria, Barry Sonnenfeld

Paul Rudd, Gretchen Mol, Mary J. Blige

Julia Louis-Dreyfus, Tyler Perry, Death Cab For Cutie

Jason Randal, Mandy Moore, Ben Harper

Geena Davis, Aaron Eckhart, Sonya Kitchell

Billy Crystal, Johnny Damon

Liza Minnelli, Al Lubel

Antonio Banderas, Patrice Oneal, Flaming Lips

Josh Hartnett, Chris Elliott, Yeah Yeah Yeahs

Ray Romano, Willie Nelson

Sharon Stone, Mark Fainaru-Wada, Lance Williams

David Spade, Teddy Geiger

Marcia Cross, Jenny Lewis and the Watson Twins

Denzel Washington, Diablo Cody

Vin Diesel, Trey Parker & Matt Stone

Natalie Portman, Al Franken

Howard Stern, Carrie Underwood

Emma Thompson, Frank Caliendo, Beth Orton

Ricky Gervais, The Subways

Harry Connick Jr., Clap Your Hands Say Yeah

Sarah Jessica Parker

Barbara Walters, Tyler James Williams

Bruce Willis, The Strokes

Hugh Laurie, Ne-Yo

Amanda Peet, Jack Hanna

Philip Seymour Hoffman, The Teutuls

Matthew Fox, Brian Regan, Broadway's Jersey Boys

Marcia Cross, Daytona 500 Winner

Donald Trump, Bill Burr

Jimmy Fallon, Hannah Teter, She Wants Revenge

Charles Barkley, Catherine Keener

Julianne Moore, Randy Jackson, The O'Jays

Geena Davis, INXS

Martha Stewart, Michael Bublé

Senator John McCain, Heidi Klum

Rachel Weisz, Beastie Boys

Beyonce Knowles, Stephen A. Smith

Harrison Ford, Michael Bublé

P Diddy, Train

Tommy Lee Jones, Anthony Hamilton

Mischa Barton, Jeff Altman, Wicked Wisdom

Bernie Mac, Beth Orton

Anthony Hopkins

Charles Grodin, Jordana Brewster

Cheryl Hines, Anna Nalick, Mike Vanderjagt

Kate Beckinsale, Bob Saget

Tatum O'Neal, Jeff MacGregor

Martin Lawrence, Kari Byron, Matisyahu

Tom Cavanagh, Jake Johannsen

Kiefer Sutherland, Alicia Keys, Andy Samberg

Queen Latifah, Bob Sarlatte

Scarlett Johannsen, Tiki Barber, Imogen Heap

Albert Brooks, Kristin Cavallari

Amy Sedaris, Dennis Regan, the Temptations

Felicity Huffman, David Rakoff, Common

Pierce Brosnan, Marv Albert

Bill O'Reilly, Eric Bana

Heather Graham, Fall Out Boy