 | Jason Alexander Self |
 | Chris Albrecht Self - HBO Chairman / CEO |
 | Hank Azaria Self |
 | Shelley Berman Self |
 | Steven Gary Banks Billy the Mime (as Billy the Mime) |
 | Lewis Black Self |
 | Mario Cantone Self |
 | George Carlin Self |
 | Drew Carey Self |
 | Mark Cohen Self |
 | Scott Thompson Self |
 | Billy Connolly Self |
 | Hugh Hefner Self (archive footage) (uncredited) |
 | Jimmy Kimmel Self (archive footage) (uncredited) |
 | Paul Provenza Self (uncredited) |
 | Rob Schneider Self (archive footage) (uncredited) |
 | Pat Cooper Self |
 | Wayne Cotter Self |
 | Andy Dick Self |
| Frank Digiacomo Self - Journalist |
 | Phyllis Diller Self |
 | Susie Essman Self |
 | Carrie Fisher Self |
 | Joe Franklin Self |
 | Todd Glass Self |
 | Judy Gold Self |
 | Whoopi Goldberg Self |
 | Gilbert Gottfried Self |
 | Dana Gould Self - Writer / Producer |
 | Allan Harvey Self |
 | Eric Idle Self |
 | Dom Irrera Self |
 | Eddie Izzard Self |
 | Richard Jeni Self |
 | Jake Johannsen Self |
| The Amazing Johnathan Self (as Amazing Johnathan) |
| Jay Kogen Self - Writer / Producer |
 | Sue Kolinsky Self |
 | Paul Krassner Self - Satirist / Editor, 'The Realist' |
 | Cathy Ladman Self |
 | Lisa Lampanelli Self |
 | Richard Lewis Self |
 | Wendy Liebman Self |
 | Howie Mandel Self |
 | Merrill Markoe Self |
| Jay Marshall Self |
 | Jackie Martling Self (as Jackie 'The Joke Man' Martling) |
 | Chuck McCann Self |
 | Michael McKean Self |
| Eric Mead Self |
 | Larry Miller Self |
 | Martin Mull Self |
 | Kevin Nealon Self |
 | Taylor Negron Self |
| Otto Petersen Self |
 | Rick Overton Self |
 | Gary Owens Self |
| Owen Morse Self |
| Jonathan Wee Self |
 | Penn Jillette Self |
 | Teller Self |
| Peter Pitofsky Self |
 | Emo Philips Self |
 | Kevin Pollak Self |
 | Paul Reiser Self |
 | Andy Richter Self |
 | Don Rickles Self |
 | Chris Rock Self |
| Gregg Rogell Self |
 | Jeff Ross Self |
| Jon Ross Self |
 | Rita Rudner Self |
 | Bob Saget Self |
| T. Sean Shannon Self - Writer / Producer, SNL |
 | Harry Shearer Self |
 | Sarah Silverman Self |
 | Bill Maher Self |
 | Bobby Slayton Self |
 | Dick Smothers Self (as The Smothers Brothers) |
 | Tom Smothers Self (as The Smothers Brothers) |
 | Doug Stanhope Self |
| Carrie Snow Self |
 | David Steinberg Self |
 | Jon Stewart Self |
 | Larry Storch Self |
 | Rip Taylor Self |
 | Dave Thomas Self |
 | David Brenner Self |
| Johnny Thompson Self |
| Peter Tilden Self |
 | Bruce Vilanch Self |
 | Fred Willard Self |
 | Robin Williams Self |
 | Steven Wright Self |
| Joe Garden Self (Staff of the Onion) |
| Todd Hanson Self (Staff of the Onion) |
| Tim Harrod Self (Staff of the Onion) |
| Chris Karwowski Self (Staff of the Onion) |
| Carol Kolb Self (Staff of the Onion) |
| Maria Schneider Self (The Onion Editorial Staff) |
 | Trey Parker Cartman / Stan (voice) |
 | Matt Stone Kyle / Kenny (voice) |
 | Tim Conway Man in Closing Credits |
 | Eddie Gorodetsky Self |
| Alan Kirschenbaum Self - Writer / Producer |
