Season 12 Details Casts Episode Lists of Season 12 Title Season 12 Genres Comedy Talk Air Date 2004-08-31 Episode Runtime 01 Hours 02 Minutes Season Number 12 Episode Count On Season 12 166 Production Companies Universal Media Studios, Broadway Video, Conaco, NBC Studios, Universal Television Conan O'Brien Self - Host Joel Godard Self - Announcer (voice) Episode 1 2004-08-31 Al Franken, Jason Bateman... Episode 2 2004-09-01 John C. Reilly, Ja Rule, ... Episode 3 2004-09-02 Dave Chappelle, Rose Byrn... Episode 4 2004-09-03 Jeremy Piven, Tim Meadows... Episode 5 2004-09-07 Andy Richter, Neve Campbe... Episode 6 2004-09-08 Bill Maher, Duane "Dog" C... Episode 7 2004-09-09 Matthew Broderick, Denise... Episode 8 2004-09-10 Paris Hilton, Stuart Town... Episode 9 2004-09-14 Donald Trump, Wayne Brady... Episode 10 2004-09-15 Megan Mullally, Tony Danz... Episode 11 2004-09-16 Gwyneth Paltrow, Paul Bet... Episode 12 2004-09-17 Drew Barrymore, Mark Cuba... Episode 13 2004-09-21 Tiger Woods, Selma Blair,... Episode 14 2004-09-22 Matt LeBlanc, Anthony Edw... Episode 15 2004-09-23 Tom Brokaw, Katie Holmes,... Episode 16 2004-09-24 Rob Lowe, Jill Hennessy, ... Episode 17 2004-09-28 Jim Belushi, Eve, Keane... Episode 18 2004-09-29 Christopher Walken, Dylan... Episode 19 2004-09-30 James Spader, Amy Poehler... Episode 20 2004-10-01 Joaquin Phoenix, Teri Hat... Episode 21 2004-10-05 Jimmy Fallon, Chad Michae... Episode 22 2004-10-06 Hilary Duff, Anthony Kied... Episode 23 2004-10-07 Drew Carey, Carolyn Kepch... Episode 24 2004-10-08 Sean "P. Diddy" Combs, Da... Episode 25 2004-10-12 Brian Williams, Tom Green... Episode 26 2004-10-13 Matt Stone & Trey Parker,... Episode 27 2004-10-14 Al Roker, Tracy Morgan, J... Episode 28 2004-10-15 Jason Schwartzman, Jason ... Episode 29 2004-10-19 Allison Janney, James Ell... Episode 30 2004-10-20 Claire Danes, Carson Kres... Episode 31 2004-10-21 Jude Law, Meredith Vieira... Episode 32 2004-10-22 Sarah Michelle Gellar, Wi... Episode 33 2004-11-03 Hank Azaria, Tommy Lee, J... Episode 34 2004-11-04 Jay-Z, Jerry O'Connell, T... Episode 35 2004-11-05 Eva Longoria, Terry Franc... Episode 36 2004-11-09 Tina Fey, Spencer Fox, Fa... Episode 37 2004-11-10 Salma Hayek, Adam Brody, ... Episode 38 2004-11-11 Pierce Brosnan, Paget Bre... Episode 39 2004-11-12 Chazz Palminteri, Marcia ... Episode 40 2004-11-16 Tim Allen, Eddie Izzard, ... Episode 41 2004-11-17 Dan Aykroyd, Ayda Field, ... Episode 42 2004-11-18 Woody Harrelson, Paul Reu... Episode 43 2004-11-19 William Shatner, Patton O... Episode 44 2004-11-23 Kelsey Grammer, Rosario D... Episode 45 2004-11-24 John Tesh, Horatio Sanz, ... Episode 46 2004-11-25 Steve Irwin, Paul Giamatt... Episode 47 2004-11-26 Colin Farrell, Craig Bier... Episode 48 2004-11-30 Val Kilmer, Peter Gallagh... Episode 49 2004-12-01 Diane Sawyer, Thomas Hade... Episode 50 2004-12-02 Alec Baldwin, Jason Biggs... Episode 51 2004-12-03 Brooke Shields, Ryan Reyn... Episode 52 2004-12-14 Kevin Spacey, Billy Conno... Episode 53 2004-12-15 Liam Neeson, Triple H, Av... Episode 54 2004-12-16 Téa Leoni, Marc Maron, N... Episode 55 2004-12-17 Adam Sandler, My Chemical... Episode 56 2004-12-21 Jeff Goldblum, Joy Behar,... Episode 57 2004-12-22 Whoopi Goldberg, Danny Ma... Episode 58 2004-12-23 Bill Murray, Tony Bennett... Episode 59 2004-12-28 Clyde Peeling, Kenan Thom... Episode 60 2004-12-29 Carson Daly, Rich Hall, G... Episode 61 2004-12-30 Snoop Dogg, Keri Russell,... Episode 62 2004-12-31 New Year's Eve Show: Darr... Episode 63 2005-01-11 Samuel L. Jackson, Maura ... Episode 64 2005-01-12 John Mayer, Patrick Wilso... Episode 65 2005-01-13 Topher Grace, Nia Long, J... Episode 66 2005-01-14 Dennis Quaid, Frank, Sens... Episode 67 2005-01-18 Heidi Klum, Harland Willi... Episode 68 2005-01-19 Ice Cube, Carmen Elektra,... Episode 69 2005-01-20 Ethan Hawke, Randy Jackso... Episode 70 2005-01-21 John Leguizamo, Nicole Ri... Episode 71 2005-02-01 Alan Alda, Jeffrey Tambor... Episode 72 2005-02-02 Donald Trump, Mekhi Phife... Episode 73 2005-02-03 Brian Williams, Jimmy Buf... Episode 74 2005-02-04 Sharon Osbourne, Dermot M... Episode 75 2005-02-08 Simon Cowell, Will Forte,... Episode 76 2005-02-09 Kevin James, Mark Burnett... Episode 77 2005-02-10 Jason Bateman, Caroline R... Episode 78 2005-02-11 Seth Green, Josh Duhamel,... Episode 79 2005-02-15 Alan Cumming, Gavin Rossd... Episode 80 2005-02-16 Tom Selleck, Jamie Kenned... Episode 81 2005-02-17 Hilary Swank, Roger Ebert... Episode 82 2005-02-18 Charlie Sheen, Molly Sims... Episode 83 2005-02-22 Tom Arnold, Rachel Weisz,... Episode 84 2005-02-23 Christina Ricci, Artie La... Episode 85 2005-02-24 Barbara Walters, Omar Epp... Episode 86 2005-02-25 John Travolta, Shannon El... Episode 87 2005-03-01 Tyra Banks, Jesse Eisenbe... Episode 88 2005-03-02 Sean 'P.Diddy' Combs, Chr... Episode 89 2005-03-03 The Rock, Brittany Snow, ... Episode 90 2005-03-04 Vin Diesel, Fred Armisen,... Episode 91 2005-03-08 Sylvester Stallone, Ben F... Episode 92 2005-03-09 Robin Williams, Nigella L... Episode 93 2005-03-10 Bruce Willis, Jamie King,... Episode 94 2005-03-11 John Lithgow, Kevin Polla... Episode 95 2005-03-22 Jarod Miller, Ozzy Osbour... Episode 96 2005-03-23 Clive Owen, Steve Carell,... Episode 97 2005-03-24 Benicio Del Toro, Jordana... Episode 98 2005-03-25 Jessica Alba, Mike Binder... Episode 99 2005-03-29 Al Franken, Alicia Silver... Episode 100 2005-03-30 Queen Latifah, Big Show, ... Episode 101 2005-03-31 Penélope Cruz, Will Arne... Episode 102 2005-04-01 Pamela Anderson, Bob Sage... Episode 103 2005-04-05 Gisele Bundchen, Johnny D... Episode 104 2005-04-06 Matthew McConaughey, John... Episode 105 2005-04-07 Steve Zahn, Fran Drescher... Episode 106 2005-04-08 Drew Barrymore, Dame Edna... Episode 107 2005-04-12 Christian Slater, Kristen... Episode 108 2005-04-13 Jimmy Fallon, Anderson Co... Episode 109 2005-04-14 David Duchovny, Rachel Dr... Episode 110 2005-04-15 Jeff Goldblum, Damon Dash... Episode 111 2005-04-26 Mayor Bloomberg, Natascha... Episode 112 2005-04-27 Ellen Barkin, Mila Kunis,... Episode 113 2005-04-28 John C. Reilly, Zooey Des... Episode 114 2005-04-29 Amanda Peet, Gene Wilder,... Episode 115 2005-05-03 Martin Short, Felicity Hu... Episode 116 2005-05-04 Don Cheadle, Elisha Cuthb... Episode 117 2005-05-05 Hank Azaria, George Forem... Episode 118 2005-05-06 Jet Li, Jennifer Esposito... Episode 119 2005-05-10 Matt Dillon, Al Roker, Fa... Episode 120 2005-05-11 Ryan Phillippe, Wanda Syk... Episode 121 2005-05-12 Will Ferrell, Louis XIV... Episode 122 2005-05-13 James Spader, Quentin Tar... Episode 123 2005-05-17 Donald Trump, Patricia Ar... Episode 124 2005-05-18 Andy Richter, Matthew Fox... Episode 125 2005-05-19 Amy Poehler, Christopher ... Episode 126 2005-05-20 Ted Danson, Tana Goertz, ... Episode 127 2005-05-24 Chris Rock, Evangeline Li... Episode 128 2005-05-25 Senator John McCain, Ambe... Episode 129 2005-05-26 Adam Sandler, Barney Reed... Episode 130 2005-05-27 Juliette Lewis, Bill Bell... Episode 131 2005-06-07 Cedric the Entertainer, M... Episode 132 2005-06-08 Carson Daly, George Lopez... Episode 133 2005-06-09 Russell Crowe, Kristen Da... Episode 134 2005-06-10 Christina Applegate, Regi... Episode 135 2005-06-14 Rudolph Giuliani, Colin Q... Episode 136 2005-06-15 Matt Lauer, Mike Epps, Dr... Episode 137 2005-06-16 Heather Locklear, Paul Gi... Episode 138 2005-06-17 Ethan Hawke, Carson Kress... Episode 139 2005-06-21 Tom Brokaw, Roger Bart, J... Episode 140 2005-06-22 Lindsay Lohan, David Alan... Episode 141 2005-06-23 Bob Costas, Justin Long, ... Episode 142 2005-06-24 Al Franken, Fountains Of ... Episode 143 2005-07-05 Michael Chiklis, Finesse ... Episode 144 2005-07-06 Jennifer Connelly, Ioan G... Episode 145 2005-07-07 Tony Shalhoub, Greg Giral... Episode 146 2005-07-08 Dan Aykroyd, Anthony Ande... Episode 147 2005-07-12 Scarlett Johansson, Jeffr... Episode 148 2005-07-13 Lisa Kudrow, D. J. Qualls... Episode 149 2005-07-14 Brian Williams, Jason Rit... Episode 150 2005-07-15 Owen Wilson, Caroline Rhe... Episode 151 2005-07-19 Billy Bob Thornton, Patto... Episode 152 2005-07-20 Michael Clarke Duncan, Ca... Episode 153 2005-07-21 John Leguizamo, John Tesh... Episode 154 2005-07-22 Tim Robbins, Isla Fisher,... Episode 155 2005-08-02 Jarod Miller, Benjamin Mc... Episode 156 2005-08-03 Denis Leary, Kevin Nealon... Episode 157 2005-08-04 Johnny Knoxville, John O'... Episode 158 2005-08-05 Jeff Goldblum, Marc Maron... Episode 159 2005-08-09 Mark Wahlberg, Bob Saget,... Episode 160 2005-08-10 Kate Hudson, Paul Rudd, K... Episode 161 2005-08-11 Rob Schneider, Andre Benj... Episode 162 2005-08-12 Eva Longoria, Tommy Lee... Episode 163 2005-08-16 Eric McCormack, Morgan Sp... Episode 164 2005-08-17 Tom Arnold, Howie Mandel,... Episode 165 2005-08-18 Steve Carell, Connie Niel... Episode 166 2005-08-19 Heath Ledger, Jim Cramer,...