George Lopez, Giuliana DePandi, My Chemical Romance

Courteney Cox Arquette, Mark Moses, Twilight Singers

Maggie Gyllenhaal, Tom O'Dell, Lindsey Buckingham

Lauren Conrad, Eddie Pepitone

Donal Logue, Reality TV star New York, Shiny Toy Guns

Jerry O'Connell, Giada De Laurentiis, Lindsey Buckingham

Nicollette Sheridan, Billy Ray Cyrus, Gran Bel Fisher

David Arquette, Joan and Melissa Rivers, Spank Rock

Donald Trump, Carrot Top, Radiant

Zach Braff, Donald Faison, Shaun White, Naked Trucker & T-Bones

Rupert Everett, Sophia Bush, Robin Thicke and Pharrell

Sarah Silverman, Greg Grunberg, Slayer

Pat O'Brien, Dominic Purcell, Sunshine Anderson

Andy Garcia, John Mellencamp

Jeremy Piven, Padma Lakshmi, John Mellencamp

Ryan Reynolds, Robert Kelly

Christina Applegate, Patton Oswalt, James Morrison

Kevin Bacon, Sofia Vergara, Robin Thicke with Pharrell

Felicity Huffman, celebrity photographer Yeha, Stephen Marley featuring Damian Marley

Andy Dick, Ivanka Trump, NAS

Albert Reyes, Dominic Monaghan, Gabrielle Union, Paul Weller

Dane Cook, Katharine McPhee

Gwen Stefani, Justin Chambers, Fall Out Boy

Tenacious D, Guillermo del Toro

Ryan Phillippe, Josh Hutcherson, Robert Schimmel

Clay Aiken, Gabrielle Union, Madeleine Peyroux

Kate Walsh, Jackie Earle Haley, Incubus

Charles Barkley, Masi Oka, The Colour

William Shatner, Hari Kondabalu

Ellen DeGeneres, Skeet Ulrich, Pretty Ricky

Rebecca Romijn, Daytona 500 winner Kevin Harvick, Cold War Kids

Randy Jackson, Jonathan Silverman, Boys Like Girls

Kathie Lee Gifford, Ken Davitian, Mickey Avalon

Kelly Ripa, Milo Ventimiglia, Incubus

Jewel, Steven Wright

LL Cool J, Ricky Jay, Tom Morello

Ray Liotta, Nadine Velasquez, Danity Kane

Christina Ricci, Patrick Warburton, Locksley

Brad Garrett, Julian McMahon, Ted Nugent

Rosie Perez, Jensen Ackles, Evanescence

Rick Schroder, Amber Valletta, Omarion

Artie Lang, Bryan Greenberg, The Feeling

Mark Wahlberg, Wes Craven, MIMS

Jeff Goldblum, Kate Mara, Michael Wilde

Terrence Howard, Bob Woodruff, The Kooks

Don Cheadle, Joe and Gavin Maloof, Paolo Nutini

"Dancing with the Stars" castoff

Heather Mills, Laura Prepon, Young Buck

Michael Chiklis, Kiele Sanchez, Mika

Will Arnett, Evan Ross, TV On The Radio

Amy Poehler, Carmelo Anthony, Josh Groban

Hilary Swank, "Dancing with the Stars" castoff, Hilary Duff

Kurt Russell, Rachael Harris, Elliott Yamin

Quentin Tarantino, Robert Rodriguez, Tim McGraw

Rosario Dawson, Nick Swardson, Ciara

Jim Belushi, the latest "Dancing with the Stars" castoff Leeza Gibbons, Pink

Jeff Foxworthy, Vanessa Ferlito, Good Charlotte

Goran Visnjic, Andy Milonakis, The Academy Is...

Jamie-Lynn Sigler, Carlos Mencia, Rodrigo Y Gabriela

Jon Voight, Andy Dick

Paul Reubens, the latest "Dancing with the Stars" castoff, Madden 2007 video game cover athlete, Silversun Pickups

David Arquette, Simon Pegg, Nick Frost, Killswitch Engage

Luke Wilson, Andy Baldwin, Bucky Covington

Michael Chiklis, Maria Menounos, Rube Goldberg winners from Ferris State University

Jamie Kennedy, Iggy Pop, The Stooges

David Alan Grier, Santiago Cabrera, The Nightwatchman

Sanjaya Malaker, Sig and Edgar Hansen, Arctic Monkeys

Tori Spelling, Mike White, The Cinematics

David Spade, the latest "Dancing with the Stars" castoff, Kaiser Chiefs

Andy Dick, Danica Patrick, Black Rebel Motorcycle Club

Eva Longoria, Frank Vincent, Macy Gray

Peter Krause, Garry Marshall

Tracy Morgan, the latest "Dancing with the Stars" castoff, Blake Shelton

Clay Aiken, Aida Turturro, Alexa Ray Joel

Matthew Fox, Kelly Clarkson

Jimmy hosts an entire show direct from a Santa Monica Big Blue Bus, picking up guests along the bus route, including Paula Abdul, Flavor Flav, Feist

Sarah Silverman, Jerry Ferrara, Avril Lavigne

Cameron Diaz, Mark Indelicato, The Used

Geoffrey Rush, Mary Lynn Rajskub, Linkin Park

Ozzy Osbourne, Samantha Harris

Ozzy Osbourne, Jorge Garcia, "Dancing With the Stars" winner Apolo Anton Ohno

Ashley Judd, Matthew Bomer, The Bravery

Carmen Electra, Peter Jones, National Spelling Bee Champion Evan O'Dorney

Kevin Costner, Leslie Mann, Patrick Wolf

Seth Rogen, Megan Fox, Chris Cornell

Andy Garcia, Josh Flitter, Plain White T's

Bernie Mac, Bob Odenkirk, Fiction Plane

Jerry Springer, Toby Keith

Kathy Griffin, Jerry Weintraub, T-Pain

Nicole Richie, Jeff Ross, Mr. Phil and Son

Kevin Nealon, Dana Gould, robot inventor Zou Ren Ti

Don Rickles, Keely Smith

Debra Messing, Justin Long, Kelly Rowland

George Foreman, Jennifer Esposito, Tiger Army

Robin Williams, "Ice Road Truckers" Hugh Rowland and T.J. Tilcox, T.I.

Nick Lachey, Reggie Bush, Rich Boy

Ethan Hawke, Elisha Cuthbert, Harris Wittels

LeBron James, Timothy Olyphant, Velvet Revolver

Adam Corolla, Bear Grylls, Maroon 5

Brian Williams, Petra Nemcova, As Tall As Lions

Mark Consuelos, Louis C.K., Jason Aldean

Sean Hayes, Chris Hansen, Kalai

Rob Schneider, Austin Nichols, Maximo Park

Adam Sandler, Kevin James, Cynthia McFadden, Ne-Yo

Don Cheadle, Zac Efron, Editors

Sharon Osbourne, Brett Ratner, Common

Marc Anthony, Katee Sackhoff, Jim Norton

Adam Brody, Christopher Mintz-Plasse, Sean Kingston

Andy Samberg, Nick Simmons, Rooney

Jackie Chan, Chris Tucker, Fred Savage, Eldar

Kobe Bryant, Catherine Bell, Tay Zonday

Paul Rudd, Michael Cera, Public Enemy

David Duchovny, Jonah Hill, El-P

William Baldwin, The Almost

Mandy Moore, Jon Hamm, Hacky Sack champ Václav Klouda, Joss Stone

George Lopez, Matt Dallas, Yung Joc

Dan Fogler

Kirk Douglas, Terrell Owens, Gogol Bordello

Will Forte, Rilo Kiley, Perez Hilton, Super Dave Osborne

Seth Green, Ashley Jenson, Galactic with Lyrics Born

Daniel Radcliffe, Jim Cramer, Hurricane Chris

50 Cent, Al Michaels

Denis Leary, Charlie Day, Modest Mouse

Kanye West, Jeff Garlin

Ryan Seacrest, Anthony Anderson, Hot Hot Heat

Amy Brenneman, Tom Ruprecht, Harry Shearer

David Spade, Evan Rachel Wood, Mute Math

Dane Cook, Samaire Armstrong, KT Tunstall

Ty Pennington, Barry Manilow

Dylan McDermott, Tom Bergeron, Sea Wolf

Kyra Sedgwick, "Dancing with the Stars" castoff Josie Maran, will.i.am

Danny DeVito, Mario Batali, Frankie Valli

Michael Douglas, Amanda Bynes, James Blunt

Sandra Oh, "Dancing with the Stars" castoff Albert Reed, Mark Ronson

Dwayne "The Rock" Johnson, Brad Womack, Nick Lowe

Jamie Foxx, Chyler Leigh, Soulja Boy

Rachel Griffiths, Jack McBrayer, Matchbox Twenty

Sarah Silverman, Balthazar Getty, "Dancing with the Stars" castoff Wayne Newton, Justice

America Ferrera, Tony Hawk, Datarock

Jason Schwartzman, Jennifer Esposito, José González

Anne Heche, Tom Anderson, Q-Tip

Kristin Chenoweth, Nick Cannon, "Dancing with the Stars" castoff Floyd Mayweather, Angie Stone

Cheryl Hines, Scott Foley, Chromeo

Angie Harmon, David Koechner, Talib Kweli

Terry Bradshaw, Keith Urban

Kelly Ripa, Sara Bareilles

Mira Sorvino, the fifth eliminated celebrity from "Dancing with the Stars", Brad Paisley

Josh Hartnett, Tila Tequila, Ben Harper

Jack LaLanne, Interpol

Rebecca Romijn, the sixth eliminated celebrity from "Dancing with the Stars", James Lipton

Andy Dick, Nick Swardson, Everytime I Die

Jerry O'Connell, Common, Thurston Moore

Christina Applegate, Zachary Quinto, LeAnn Rimes