6x73 - Evangeline Lilly, Ben Barnes, Joe Jackson

May 14, 2008

6x74 - Josh Holloway, Brad Williams, Dierks Bentley

May 15, 2008

6x75 - Ryan Seacrest, Clay Aiken

May 16, 2008

6x76 - Matthew Fox, the winner of "Dancing with the Stars", Pussycat Dolls

May 20, 2008

6x77 - Josh Groban, Kat Von D, The Kooks

May 21, 2008

6x78 - Al Reynolds, Death Cab for Cutie

May 22, 2008

6x79 - Shia LaBeouf, Neil Diamond

May 23, 2008

6x80 - Dennis Hopper, Doug Benson

June 3, 2008

6x81 - Quinton "Rampage" Jackson, Coldplay

June 4, 2008

6x82 - Usher

June 5, 2008

6x83 - Kevin Nealon, DeAnna Pappas, The Ting Tings

June 6, 2008

6x84 - Season 6, Episode 84

June 9, 2008

6x85 - Seann William Scott,Emmanuelle Chriqui, N.E.R.D.

June 10, 2008

6x86 - Kathy Griffin, Josh Peck, Esperanza Spalding

June 11, 2008

6x87 - Tim Roth, Kenny Mayne, Carolina Liar

June 12, 2008

6x88 - John Leguizamo , Dan Abrams, Secondhand Serenade

June 13, 2008

6x89 - Dwayne Johnson, Steve Carell

June 15, 2008

6x90 - Game Night primetime special: Sen. John McCain, Mike Myers, late night: Kate Walsh, Jerry Springer, Chromeo

June 17, 2008

6x91 - Steve Carell, Jewel

June 19, 2008

6x92 - Regis Philbin, Sharon Osborne, Lil Wayne

June 20, 2008

6x93 - Peter Berg, Romany Malco, Billy Idol

June 24, 2008

6x94 - Mike Myers, Mel B., the All For Nots

June 25, 2008

6x95 - Whoopi Goldberg, Fred Willard, Cyndi Lauper

June 26, 2008

6x96 - Charlize Theron, Guillermo del Toro, We the Kings

June 27, 2008

6x97 - Andy Samberg, Minnie Driver, Shwayze

July 15, 2008

6x98 - Nick Lachey, Gabrielle Union, Nas

July 16, 2008

6x99 - Justin Timberlake, Kim Kardashian, Cool Kids

July 17, 2008

6x100 - Maggie Gyllenhaal, Ant and Dec, Minus the Bear

July 18, 2008

6x101 - Seth Green, Jesse Ventura, Jamie Lidell

July 21, 2008

6x102 - George Foreman, Alanis Morissette

July 22, 2008

6x103 - Paul Giamatti, Mitch Rouse, Los Lonely Boys

July 23, 2008

6x104 - Will Ferrell, John C. Reilly, Mel B, Does It Offend You Yeah?

July 24, 2008

6x105 - Seth Green, Jesse Ventura, Jamie Lidell

July 25, 2008

6x106 - Gillian Anderson, Alex Cambert, Bryan Adams

July 29, 2008

6x107 - David Duchovny, Katharine McPhee, Wendy Liebman

July 30, 2008

6x108 - Mariah Carey, Dan Abrams

July 31, 2008

6x109 - Catherine Bell, Huey Lewis and the News

August 1, 2008

6x110 - Rosie Perez, Brandon T. Jackson, Tyga

August 5, 2008

6x111 - Luke Wilson, Eliza Dushku, Rev Theory

August 6, 2008

6x112 - James Franco, Tommy Lee, From First to Last

August 7, 2008

6x113 - Ben Stiller, Danica McKellar, Airbourne

August 8, 2008

6x114 - Don Rickles, "Dancing with the Stars" contestant Maurice Greene, The Game

August 26, 2008

6x115 - Don Cheadle, Emma Stone, Lady Antebellum

August 27, 2008

6x116 - Kristin Chenoweth, Staind

August 28, 2008

6x117 - Lauren Conrad, Tyrese, Glen Campbell

August 29, 2008

6x118 - Kevin Nealon, Jo Frost, Judas Priest

September 2, 2008

6x119 - Russell Brand, Christina Hendricks, Young Jeezy

September 3, 2008

6x120 - Aaron Eckhart, Metro Station

September 4, 2008

6x121 - Taye Diggs & Sarah Jane Morris

September 5, 2008

6x122 - Kobe Bryant, Tokio Hotel

September 9, 2008

6x124 - Debra Messing, Buckcherry

September 11, 2008

6x125 - Darren Taylor, Terrence Howard, Michelle Monaghan

September 12, 2008

6x126 - Brad Garrett, Kerry Washington, Adam Perry Lang, Buckcherry

September 16, 2008

6x127 - Alyssa Milano, Stephen Merchant, Ne-Yo

September 17, 2008

6x128 - Ricky Gervais, Carla Gugino, Good Charlotte

September 18, 2008

6x129 - Michelle Monaghan, Cold War Kids

September 19, 2008

6x130 - Shia LaBeouf, January Jones, Nelly

September 22, 2008

6x131 - Dane Cook, Dylan & Cole Sprouse, Atmosphere

September 23, 2008

Comedian/actor Dane Cook (My Best Friend's Girl), actors Dylan & Col Sprouse (The Suite Life on Deck), musical guest Atmosphere

6x132 - Sandra Oh, the first "Dancing with the Stars" castoff, Foals

September 24, 2008

6x133 - Rob Lowe, Kimbo Slice, Chris Bianco

September 25, 2008

6x134 - Ricky Gervais, Carla Gugino, Good Charlotte

September 29, 2008

6x135 - Jon Favreau, Elvis Costello, the latest castoff from "Dancing with the Stars"

September 30, 2008

6x136 - Rosario Dawson, Jamie Kennedy, Gavin Rossdale

October 1, 2008

6x137 - Bill Maher, Jennifer Hudson

October 2, 2008

6x138 - Lucy Liu, John Slattery, Morgan Murphy

October 3, 2008

6x139 - Chris O'Donnell, the latest "Dancing with the Stars" castoff, Scars on Broadway

October 14, 2008

6x140 - David Alan Grier, Amaury Nolasco, Jessie Baylin

October 15, 2008

6x141 - Mark Wahlberg, Dania Ramirez

October 16, 2008

6x142 - Mila Kunis, Ben Stein, The Knux

October 17, 2008

6x143 - The latest "Dancing with the Stars" castoff, Jesse McCartney

October 21, 2008

6x144 - Amy Sedaris, Jonny Lee Miller, animal specialist Kirstin McMillan

October 22, 2008

6x145 - Colin Farrell, Natalie Zea, Lady GaGa

October 23, 2008

6x146 - Tom Arnold, Shea Whigham, Smashing Pumpkins

October 24, 2008

6x147 - Kristin Chenoweth, "Dancing with the Stars" castoff Cloris Leachman, Alkaline Trio

October 28, 2008

6x148 - Seth Rogen, Corbin Bleu, the Whigs

October 29, 2008

6x149 - Sarah Silverman, T.I.

October 30, 2008

6x150 - Nicolette Sheridan, Craig Robinson, N.E.R.D.

October 31, 2008

6x151 - Dr. Phil, Jordana Brewster, Eagles of Death Metal

November 3, 2008

6x152 - Sean Hayes, Susan Lucci, Kenny Maynes, John Legend

November 5, 2008

6x153 - Samuel L. Jackson, Bridget Regan, Hinder

November 6, 2008

6x154 - Terry Bradshaw, Jesse Metcalf

November 7, 2008

6x155 - Joshua Jackson, the latest

November 11, 2008

6x156 - Julia Louis Dreyfus, Dave Annable, Julianne Hough

November 12, 2008

6x157 - Daniel Craig, Olga Kurylenko

November 13, 2008

6x158 - Artie Lang, Candace Bushnell, T-Pain

November 14, 2008

6x159 - Kate Walsh, Mystery, the latest "Dancing with the Stars" castoff, Paramore

November 18, 2008

6x160 - Ellen Pompeo, Shaun White, Leona Lewis

November 19, 2008

6x161 - Jay Leno, the Hives

November 20, 2008

6x162 - Tracey Ullman, Baz Luhrmann

November 21, 2008

6x163 - Earvin "Magic" Johnson, Anna Torv, the Killers

November 24, 2008

6x164 - The winner of "Dancing with the Stars", the Jonas Brothers

November 25, 2008

6x165 - Reese Witherspoon, Craig and Paul Pumphrey, Scott Weiland

November 26, 2008

6x166 - Molly Shannon, Danny Masterson, Common

December 9, 2008

6x167 - Zooey Deschanel, Brian Austin Green, Adele

December 10, 2008

6x168 - Gabriel Macht, Sean "Diddy" Combs, Snow Patrol

December 11, 2008

6x169 - Amanda Peet, jet pack pilot Eric Scott, Freddy Rodriguez, Barry Manilow

December 12, 2008

6x170 - Courtney Cox, Bradley Cooper, the Cure

December 16, 2008

6x171 - Keri Russell, Steve Martorano, the Fray

December 17, 2008

6x172 - Russell Brand, Thomas Kretschmann, All American Rejects

December 18, 2008

6x173 - Adam Sandler, Jaime King, Fall Out Boy

December 19, 2008