Cheryl Hines, Shaun White, Russell Peters

Al Sharpton, Kenny Mayne

Carmen Electra, Autolux

John Mayer Trio

Cheryl Hines, David Banner

Dominic Monaghan, Lil' Wayne

Quentin Tarantino, Tia Carrere, John Daly

David Boreanaz, Henry Phillips

Evangeline Lilly, Jonathan Rhys-Meyers, Giant Drag

John Mayer Trio, Steve-O

Michael Chiklis, Roselyn Sanchez, Bo Bice

Adewale Akinnuoye-Agbaje, Drew Lachey, Chamillionaire ft. Lil' Flip

Method Man, Motion City Soundtrack, Jerry Bruckheimer

David Gest, Feist

Regis Philbin, Jordana Brewster, She Wants Revenge

Jerry Rice, Mike Epps, Mike O'Connell

Martin Lawrence, Dem Franchize Boyz ft. Bow Wow, Jermaine Dupri

Kid Rock, David Alan Grier

David Spade, Rob Schneider, Jon Heder, Dwele

Michael Irvin, Jeff Daniels, The Four Tops, Buddy Guy

Jessica Alba, Anthony Anderson, The Four Tops

SuperBowl Episode

Mischa Barton, Travis Barker & Shanna Moakler, James Blunt

Jorge Garcia, Dan Naturman, Nelly

Wilmer Valderrama, Dan Naturman, Golden Brooks, Dwight Yoakam

Nick Cannon, Kathy Griffin, Damian Marley

Steve Coogan, Travis Stork, Daddy Yankee

Freddie Prinze, Jr., John Daly, Jacks Mannequin

Flavor Flav

Fred Savage, Harold Perrineau Jr., Yellowcard

Jack Osbourne, Carolyn Murphy, Dem Franchize Boyz

Shaun White, Steve Harvey, Hawthorne Heights

Kathie Lee Gifford, Yehya Mohamed, Augustana

Simon Cowell, Jennifer Esposito, Dilated Peoples

Cuba Gooding Jr., Mike Birbiglia

Paul Walker, Hannah Teter, Bow Wow, Travis Barker

Kelly Ripa, Tracy Morgan

Stacy Keibler, Howie Mandel, Three Six Mafia

Jamie Oliver, Sasha Cohen, OK Go

After the Academy Awards

Zooey Deschanel, Dave Sheridan, Panic! At the Disco

Amanda Bynes, Chuck Lidell, Jamie Cullum

Michael Rapaport, Elisha Cuthbert, Matisyahu

John Lydon, Orlando Jones, Jim Gaffigan

Ice Cube, Elantu B. Veovode, Nine Black Alps

Adam Brody, John Cena, Juvenile featuring Galactic

Randy Jackson, Janet Reno, Hard-Fi

James Caan, Justin Chambers, The Tossers

Hulk Hogan, Yunjin Kim, Harold & Darrell Allen

George Lopez, Duane "Dog" Chapman, the Sounds

Jamie-Lynn Sigler, Larry the Cable Guy, Gogol Bordello

Kiefer Sutherland, Rocco DeLuca

Seth Green, Chop from "King of Cars," Anthony Jeselnik, John Anderson

Anthony Anderson, Pete Rose

Carmen Electra, David Gest, People in Planes

Tori Spelling, C. Thomas Howell, T.I.

Rebecca Romijn, Judge Marilyn Milian, T-Pain

Chris Matthews, Craig Bierko

Wilmer Valderamma, Chris Elliott, The Wiggles

Charlie Sheen, Rube Goldberg Contest winners, K.T. Tunstall

Paula Abdul, Enrico Colantoni, Mighty Gonzalez

Cheryl Hines, Landon Donovan, Bril

Eva Longoria, Dick Cavett, Dresden Dolls

Regis Philbin, Barry Watson, Mike Birbiglia

Natasha Henstridge, Robert Wuhl, the cast of MTV's "Call to Greatness"

LL Cool J, Robert Klein

Guy Pearce, Ludacris, Atmosphere

Susan Lucci, Adam Carolla, Rihanna

Joe Gannascoli, Kellie Pickler, Adam Carolla, Godsmack

Jenny McCarthy, Seth MacFarlane, The Cult

Sir Ian McKellen, Jared Leto, Franz Ferdinand

Chris O'Donnell, American Chopper Guys

Kathie Lee Gifford, Isaiah Washington, Art Brut

Famke Janssen, Jared Leto, 30 Seconds to Mars

Carl Reiner, Ashley Tisdale, Ivan Kane's Royal Jelly dancers, Martin Fry

Reggie Bush, Pat O'Brien, Lacuna Coil

Jamie Kennedy, Daryl Hannah, Jonathan Rice

Rev. Jesse Jackson, Jimmy Bennett, Nick Lachey

Dominic Monaghan, J.J. Abrams, Taking Back Sunday

Katherine Heigl, James Pickens Jr., Chandra Wilson, Ben Lee

Drew Carey, Malcolm David Kelley, Christina Milian

Teri Hatcher, Umphrey's McGee featuring Huey Lewis

Sarah Silverman, Artie Lange, Hoobastank

Sarah Silverman, James Cramer, Denny "Average Homeboy" Blaze

Julia Stiles, Jason Ritter, Atreyu

Jon Favreau, Mike Iaconelli, Elefant

Dane Cook, Brett Ratner

Ice Cube, Paget Brewster

Jessica Alba, Larry the Cable Guy, Him

Rosie Perez, Jared Hess, Elefant

John C. Reilly, Gary Gulman

Jaime Pressly, Xzibit, The Streets

Luke Perry, Jean Smart, Huey Lewis

Jack Black, Wolfmother

Fiona Apple

Ozzy Osbourne, Anthony Bourdain

Bonnie Hunt, Phil Gordon, Buckcherry

Geena Davis, Louis C.K., Jeff Corwin

Mariah Carey, Rob Zombie

Jason Alexander, Meagan Good, Jamie Kennedy

Tommy Lee, 98-year-old high school student Josephine Belasco, Greg Fitzsimmons, the Fixx

George Foreman, psychotherapist Richard Cohen, Blue October

Kathy Griffin, Jason Gray-Stanford, the Brand New Heavies

Ed Burns, NBA Finals MVP Dwayne Wade, Flyleaf

Tracy Morgan, Shaun Alexander, Sonic Youth

Lance Armstrong, Matt Dallas, Smoosh

Brittany Murphy, Danica Patrick, Eagles of Death Metal

Terrell Owens, Rainn Wilson, Rascal Flatts

Shawn & Marlon Wayans, Fred Willard, Korn

Robin Williams, Anna Faris, Rhymefest

Allison Janney, Morgan Spurlock, Jurassic 5

Rosario Dawson, Jesse Metcalf, the Flaming Lips

Gene Simmons, Jeff Ross, the Elected

Jon Cryer, the Dudesons, Los Lonely Boys

Regis Philbin, Trevor Fehrman, Pharrell

Flavor Flav, Leslie Bibb, Ben Harper

Sandra Oh, Jewel

Will Ferrell, Bobby Cannavale, Under the Influence of Giants

Matt Dillon, Justin Long, Ziggy Marley

Jonathan Winters, Kenan Thompson, Against Me!

Paul Reubens, snake handler Jules Sylvester, Obie Trice, Leonid "the Magnificent" Filatov

Samuel L. Jackson, Elisha Cuthbert, Cobra Starship

Heidi Klum, Dave Navarro, Panic Channel

Hillary Duff, Ultimate Fighting Champion Chuck Lidell, Anti-Flag

Tom Cavanaugh, Tommy Chong, Cartel

Anthony Michael Hall, Joan & Melissa Rivers, the Red Jumpsuit Apparatus

Kevin Nealon, Jay Chandrasekhar, Pat Green

Tommy Lee, Wayne Brady, Starsailor

Michael Rapaport, Jimmie Johnson, Jo Koy, Wayman Tisdale

Lauren Holly, private investigator Vinny Parco, the Roots

Ron Livingston, Toby Keith

Anthony Michael Hall, James Carville, Robert Randolph and the Family Band

Tyra Banks, Jason Statham, Papa Roach

Orlando Bloom, Emily Deschanel, Lyfe Jennings

Diane Lane, celebrity photographer Yehya Mohamed, Chingy

Chris Elliott, Rachel Bilson, LeToya

Sarah Silverman, Lionel Richie

Zach Braff, Xzibit, Josh Radin

Dwayne "The Rock" Johnson, Bam Margera, Lupe Fiasco

Felicity Huffman, Jet Li, Human League

Johnny Knoxville, Kim Raver, Patrizio

George Lopez, Clay Aiken

Jon Heder, Don, Mole and Perry, The Red Jumpsuit Apparatus

Evangeline Lilly, Anthony Anderson, Ludacris

Eva Longoria, Artie Lange

Dax Shepard, Jordana Brewster, The Killers

Dane Cook, Emilie de Ravin, The Killers

Jessica Simpson, Carlos Mencia, The Killers

Andy Dick, Diora Baird, Jet

Jason Lee, America Ferrera, Gym Class Heroes

Wanda Sykes, Sun Ming Ming, Ruben Studdard

Robin Williams, Rod Stewart

Justin Timberlake, Kate Walsh

John Stamos, Bobcat Goldthwait, Ivan Kane's Royal Jelly

Anne Heche

Ted Danson, Jennifer Tilly, Xzibit

Terry Bradshaw, Matt Davis, Lloyd Banks

Kathy Griffin, Shawnee Smith, Meat Loaf

Sharon Osbourne, Josh Radnor, the Wreckers

Roseanne Barr, Joseph Cross

Val Kilmer, Bowling for Soup

Lauren Graham, Ricardo Chavira, Anita Baker

Diddy, Tony Hawk

Julia Louis-Dreyfus, Lady Sovereign

Don Rickles, Nick and Aaron Carter, The Hold Steady

Pamela Anderson, Geraldo Rivera, Brent Simon

Tracy Morgan, Jerry Springer, Akon

Brittany Murphy, Shia LaBeouf, John Legend

Greg Kinnear, Marla Sokoloff, Sherrod Small

Billy Crystal, Ricky Martin

Teri Hatcher, Gary Brolsma, Rock Star Supernova

Regis Philbin, Jay-Z

Wilmer Valderrama, Michael Irvin, Chris Daughtry

Taye Diggs, Teri Garr, Todd Glass

Rachel Weisz, Chi McBride, Jenny Lewis

Elijah Wood, Tichina Arnold, Mute Math

David Allen Grier, Tatum O'Neal, Lily Allen

Thandie Newton, Peter Falk, Bow Wow with Chris Brown

Tom Arnold, Jo Frost, Corinne Bailey Rae

Ted Danson, Mary J. Blige

Jessica Biel, Mario Batali, Fantasia

Shawn and Marlon Wayans, Eric Dane, The Living End

Ryan Seacrest, Beck

Howard Stern, Forest Whitaker, Nas

Matthew Fox, Lawrence Taylor, +44

Adam Carolla, Giovanni Ribisi, OK Go

Sylvester Stallone, Gnarls Barkley

Matthew McConaughey, Yao Ming, Tracy McGrady, Hall & Oates

Episode 189