Episode 1: George Lopez, Giuliana DePandi, My Chemical Romance

Episode 2: Courteney Cox Arquette, Mark Moses, Twilight Singers

Episode 3: Maggie Gyllenhaal, Tom O'Dell, Lindsey Buckingham

Episode 4: Lauren Conrad, Eddie Pepitone

Episode 5: Donal Logue, Reality TV star New York, Shiny Toy Guns

Episode 6: Jerry O'Connell, Giada De Laurentiis, Lindsey Buckingham

Episode 7: Nicollette Sheridan, Billy Ray Cyrus, Gran Bel Fisher

Episode 8: David Arquette, Joan and Melissa Rivers, Spank Rock

Episode 9: Donald Trump, Carrot Top, Radiant

Episode 10: Zach Braff, Donald Faison, Shaun White, Naked Trucker & T-Bones

Episode 11: Rupert Everett, Sophia Bush, Robin Thicke and Pharrell

Episode 12: Sarah Silverman, Greg Grunberg, Slayer

Episode 13: Pat O'Brien, Dominic Purcell, Sunshine Anderson

Episode 14: Andy Garcia, John Mellencamp

Episode 15: Jeremy Piven, Padma Lakshmi, John Mellencamp

Episode 16: Ryan Reynolds, Robert Kelly

Episode 17: Christina Applegate, Patton Oswalt, James Morrison

Episode 18: Kevin Bacon, Sofia Vergara, Robin Thicke with Pharrell

Episode 19: Felicity Huffman, celebrity photographer Yeha, Stephen Marley featuring Damian Marley

Episode 20: Andy Dick, Ivanka Trump, NAS

Episode 21: Albert Reyes, Dominic Monaghan, Gabrielle Union, Paul Weller

Episode 22: Dane Cook, Katharine McPhee

Playing

Episode 23: Gwen Stefani, Justin Chambers, Fall Out Boy

Episode 24: Tenacious D, Guillermo del Toro

Episode 25: Ryan Phillippe, Josh Hutcherson, Robert Schimmel

Episode 26: Clay Aiken, Gabrielle Union, Madeleine Peyroux

Episode 27: Kate Walsh, Jackie Earle Haley, Incubus

Episode 28: Charles Barkley, Masi Oka, The Colour

Episode 29: William Shatner, Hari Kondabalu

Episode 30: Ellen DeGeneres, Skeet Ulrich, Pretty Ricky

Episode 31: Rebecca Romijn, Daytona 500 winner Kevin Harvick, Cold War Kids

Episode 32: Randy Jackson, Jonathan Silverman, Boys Like Girls

Episode 33: Kathie Lee Gifford, Ken Davitian, Mickey Avalon

Episode 34: Kelly Ripa, Milo Ventimiglia, Incubus

Episode 35: Jewel, Steven Wright

Episode 36: LL Cool J, Ricky Jay, Tom Morello

Episode 37: Ray Liotta, Nadine Velasquez, Danity Kane

Episode 38: Christina Ricci, Patrick Warburton, Locksley

Episode 40: Brad Garrett, Julian McMahon, Ted Nugent

Episode 41: Rosie Perez, Jensen Ackles, Evanescence

Episode 42: Rick Schroder, Amber Valletta, Omarion

Episode 43: Artie Lang, Bryan Greenberg, The Feeling

Episode 44: Mark Wahlberg, Wes Craven, MIMS

Episode 45: Jeff Goldblum, Kate Mara, Michael Wilde

Episode 46: Terrence Howard, Bob Woodruff, The Kooks

Episode 47: Don Cheadle, Joe and Gavin Maloof, Paolo Nutini

Episode 48: "Dancing with the Stars" castoff

Episode 49: Heather Mills, Laura Prepon, Young Buck

Episode 50: Michael Chiklis, Kiele Sanchez, Mika

Episode 51: Will Arnett, Evan Ross, TV On The Radio

Episode 52: Amy Poehler, Carmelo Anthony, Josh Groban

Episode 53: Hilary Swank, "Dancing with the Stars" castoff, Hilary Duff

Episode 54: Kurt Russell, Rachael Harris, Elliott Yamin

Episode 55: Quentin Tarantino, Robert Rodriguez, Tim McGraw

Episode 56: Rosario Dawson, Nick Swardson, Ciara

Episode 57: Jim Belushi, the latest "Dancing with the Stars" castoff Leeza Gibbons, Pink

Episode 58: Jeff Foxworthy, Vanessa Ferlito, Good Charlotte

Episode 59: Goran Visnjic, Andy Milonakis, The Academy Is...

Episode 60: Jamie-Lynn Sigler, Carlos Mencia, Rodrigo Y Gabriela

Episode 61: Jon Voight, Andy Dick

Episode 62: Paul Reubens, the latest "Dancing with the Stars" castoff, Madden 2007 video game cover athlete, Silversun Pickups

Episode 63: David Arquette, Simon Pegg, Nick Frost, Killswitch Engage

Episode 64: Luke Wilson, Andy Baldwin, Bucky Covington

Episode 65: Michael Chiklis, Maria Menounos, Rube Goldberg winners from Ferris State University

Episode 66: Jamie Kennedy, Iggy Pop, The Stooges

Episode 67: David Alan Grier, Santiago Cabrera, The Nightwatchman

Episode 68: Sanjaya Malaker, Sig and Edgar Hansen, Arctic Monkeys

Episode 69: Tori Spelling, Mike White, The Cinematics

Episode 70: David Spade, the latest "Dancing with the Stars" castoff, Kaiser Chiefs

Episode 71: Andy Dick, Danica Patrick, Black Rebel Motorcycle Club

Episode 72: Eva Longoria, Frank Vincent, Macy Gray

Episode 73: Peter Krause, Garry Marshall

Episode 74: Tracy Morgan, the latest "Dancing with the Stars" castoff, Blake Shelton

Episode 75: Evangeline Lilly, Joe Rogan, winners of the 2007 National School Scrabble Championship

Episode 76: Clay Aiken, Aida Turturro, Alexa Ray Joel

Episode 77: Matthew Fox, Kelly Clarkson

Episode 78: 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

Episode 79: Sarah Silverman, Jerry Ferrara, Avril Lavigne

Episode 80: Cameron Diaz, Mark Indelicato, The Used

Episode 81: Geoffrey Rush, Mary Lynn Rajskub, Linkin Park

Episode 82: Ozzy Osbourne, Samantha Harris

Episode 83: Ozzy Osbourne, Jorge Garcia, "Dancing With the Stars" winner Apolo Anton Ohno

Episode 84: Ashley Judd, Matthew Bomer, The Bravery

Episode 85: Carmen Electra, Peter Jones, National Spelling Bee Champion Evan O'Dorney

Episode 86: Kevin Costner, Leslie Mann, Patrick Wolf

Episode 87: Seth Rogen, Megan Fox, Chris Cornell

Episode 88: Andy Garcia, Josh Flitter, Plain White T's

Episode 89: Bernie Mac, Bob Odenkirk, Fiction Plane

Episode 90: Jerry Springer, Toby Keith

Episode 91: Kathy Griffin, Jerry Weintraub, T-Pain

Episode 92: Nicole Richie, Jeff Ross, Mr. Phil and Son

Episode 93: Kevin Nealon, Dana Gould, robot inventor Zou Ren Ti

Episode 94: Don Rickles, Keely Smith

Episode 95: Debra Messing, Justin Long, Kelly Rowland

Episode 96: George Foreman, Jennifer Esposito, Tiger Army

Episode 97: Robin Williams, "Ice Road Truckers" Hugh Rowland and T.J. Tilcox, T.I.

Episode 98: Nick Lachey, Reggie Bush, Rich Boy

Episode 99: Ethan Hawke, Elisha Cuthbert, Harris Wittels

Episode 100: LeBron James, Timothy Olyphant, Velvet Revolver

Episode 101: Adam Corolla, Bear Grylls, Maroon 5

Episode 102: Brian Williams, Petra Nemcova, As Tall As Lions

Episode 103: Mark Consuelos, Louis C.K., Jason Aldean

Episode 104: Sean Hayes, Chris Hansen, Kalai

Episode 105: Rob Schneider, Austin Nichols, Maximo Park

Episode 106: Adam Sandler, Kevin James, Cynthia McFadden, Ne-Yo

Episode 107: Don Cheadle, Zac Efron, Editors

Episode 108: Sharon Osbourne, Brett Ratner, Common

Episode 109: Marc Anthony, Katee Sackhoff, Jim Norton

Episode 110: Adam Brody, Christopher Mintz-Plasse, Sean Kingston

Episode 111: Andy Samberg, Nick Simmons, Rooney

Episode 112: Jackie Chan, Chris Tucker, Fred Savage, Eldar

Episode 113: Kobe Bryant, Catherine Bell, Tay Zonday

Episode 114: Paul Rudd, Michael Cera, Public Enemy

Episode 115: David Duchovny, Jonah Hill, El-P

Episode 116: William Baldwin, The Almost

Episode 117: Mandy Moore, Jon Hamm, Hacky Sack champ Václav Klouda, Joss Stone

Episode 118: George Lopez, Matt Dallas, Yung Joc

Episode 119: Dan Fogler

Episode 120: Kirk Douglas, Terrell Owens, Gogol Bordello

Episode 121: Will Forte, Rilo Kiley, Perez Hilton, Super Dave Osborne

Episode 122: Seth Green, Ashley Jenson, Galactic with Lyrics Born

Episode 123: Daniel Radcliffe, Jim Cramer, Hurricane Chris

Episode 124: 50 Cent, Al Michaels

Episode 125: Denis Leary, Charlie Day, Modest Mouse

Episode 126: Kanye West, Jeff Garlin

Episode 127: Ryan Seacrest, Anthony Anderson, Hot Hot Heat

Episode 128: Amy Brenneman, Tom Ruprecht, Harry Shearer

Episode 129: David Spade, Evan Rachel Wood, Mute Math

Episode 130: Dane Cook, Samaire Armstrong, KT Tunstall

Episode 131: Ty Pennington, Barry Manilow

Episode 132: Dylan McDermott, Tom Bergeron, Sea Wolf

Episode 133: Kyra Sedgwick, "Dancing with the Stars" castoff Josie Maran, will.i.am

Episode 134: Danny DeVito, Mario Batali, Frankie Valli

Episode 135: Michael Douglas, Amanda Bynes, James Blunt

Episode 136: Sandra Oh, "Dancing with the Stars" castoff Albert Reed, Mark Ronson

Episode 137: Dwayne "The Rock" Johnson, Brad Womack, Nick Lowe

Episode 138: Jamie Foxx, Chyler Leigh, Soulja Boy

Episode 139: Rachel Griffiths, Jack McBrayer, Matchbox Twenty

Episode 140: Sarah Silverman, Balthazar Getty, "Dancing with the Stars" castoff Wayne Newton, Justice

Episode 141: America Ferrera, Tony Hawk, Datarock

Episode 142: Jason Schwartzman, Jennifer Esposito, José González

Episode 143: Anne Heche, Tom Anderson, Q-Tip

Episode 144: Kristin Chenoweth, Nick Cannon, "Dancing with the Stars" castoff Floyd Mayweather, Angie Stone

Episode 145: Cheryl Hines, Scott Foley, Chromeo

Episode 146: Angie Harmon, David Koechner, Talib Kweli

Episode 147: Terry Bradshaw, Keith Urban

Episode 148: Kelly Ripa, Sara Bareilles

Episode 149: Mira Sorvino, the fifth eliminated celebrity from "Dancing with the Stars", Brad Paisley

Episode 150: Josh Hartnett, Tila Tequila, Ben Harper

Episode 151: Jack LaLanne, Interpol

Episode 152: Rebecca Romijn, the sixth eliminated celebrity from "Dancing with the Stars", James Lipton

Episode 153: Andy Dick, Nick Swardson, Everytime I Die

Episode 154: Jerry O'Connell, Common, Thurston Moore

Episode 155: Christina Applegate, Zachary Quinto, LeAnn Rimes