- Matt Besser
- Â Adair / ... 30 episodes, 1998-2000
- Amy Poehler
- Â Colby / ... 30 episodes, 1998-2000
- Ian Roberts
- Â Antoine / ... 30 episodes, 1998-2000
- Matt Walsh
- Â Trotter / ... 30 episodes, 1998-2000
- Del Close
- Â Narrator 30 episodes, 1998-2000
- Michael Delaney
- Â Assistant Boxing Coach / ... 7 episodes, 1998-2000
- Rob Corddry
- Â DEA Agent / ... 6 episodes, 1998-2000
- Paul Scheer
- Â Grim Reaper / ... 6 episodes, 1998-2000
- Rob Riggle
- Â Bodyguard / ... 5 episodes, 1998-2000
- Billy Merritt
- Â Angry Inmate / ... 5 episodes, 1998-1999
- Horatio Sanz
- Â Hornet Ball Victim / ... 3 episodes, 1998-2000
- Alfredo De Quesada
- Â Earthquake Partygoer / ... 3 episodes, 1998-2000
- Terry Jinn
- Â Architect / ... 3 episodes, 1998-2000
- Eugene Cordero
- Â Angry Inmate / ... 3 episodes, 1998-1999
- Rob Huebel
- Â Eli's Assistant / ... 3 episodes, 1998-1999
- Katie Roberts
- Â Delivery Room Doctor / ... 3 episodes, 1998-1999
- John Ross Bowie
- Â Cyber-Flex User / ... 3 episodes, 1999-2000
- Andrew Secunda
- Â Bailiff / ... 3 episodes, 1999-2000
- Patrick McCartney
- Â Grim Reaper / ... 3 episodes, 1999-2000
- Betsy Stover
- Â Daughter / ... 3 episodes, 1999-2000
- Marc Bonnée
- Â STUDent / ... 2 episodes, 2000
- Sean Conroy
- Â Man with Binoculars / ... 2 episodes, 1998-2000
- Gideon Evans
- Â Guy with Wolfman Jack Doorbell / ... 2 episodes, 1998-2000
- Randy Blair
- Â Man in Audience / ... 2 episodes, 1998-2000
- Miriam Tolan
- Â Karen Rosco / ... 2 episodes, 1998-1999
- Pat Walsh
- Â Inmate / ... 2 episodes, 1998-1999
- Chad Carter
- Â Man in Audience / ... 2 episodes, 1998-1999
- Missy O'Reilly
- Â Christian Fellowship Girl / ... 2 episodes, 1998-1999
- Dave Blumenfeld
- Â Doctor / ... 2 episodes, 1998-1999
- Sarah Thyre
- Â Angry Protester / ... 2 episodes, 1998
- Lora Lee Ecobelli
- Â Chinese Diner / ... 2 episodes, 1998
- Jon Glaser
- Â Hazmat Guy / ... 2 episodes, 1999-2000
- Brian Huskey
- Â Grim Reaper / ... 2 episodes, 1999-2000
- Kevin Kenny
- Â Earthquake Party Boy / ... 2 episodes, 1999-2000
- Leo Allen
- Â Basketball Player / ... 2 episodes, 1999-2000
- Doug Sakmann
- Â Doorframe Earthquake Partygoer / ... 2 episodes, 1999-2000
- James Eason
- Â Prison Guard / ... 2 episodes, 1999-2000
- Lonny Ross
- Â Scared Straight Student / ... 2 episodes, 1999
- John O. Nelson
- Â Lifeguard / ... 2 episodes, 1999
- Owen Burke
- Â Friar in the Soup / ... 2 episodes, 1999
- Sean Christopher Lewis
- Â Factory Party Patron / ... 2 episodes, 1999
- Adam S. Barta
- Â Museum Patron / ... 2 episodes, 1999
- Caroline O'Hare
- Â Dialect Competitor / ... 2 episodes, 1999
- Julie Brister
- Â Fat Anne Frank Wife / ... 2 episodes, 2000
- Jackie Clarke
- Â Deaf Sister / ... 2 episodes, 2000
- Rob Lathan
- Â Lab Worker / ... 2 episodes, 2000
- Greg Korin
- Â Fat Refugee Priest / ... 2 episodes, 2000
- John Breen
- Â Corpse / ... 2 episodes, 2000
- Nick Kroll
- Â Man in Audience 1 episode, 1998
- Andy Richter
- Â Hansel 1 episode, 1998
- Dee Snider
- Â Self 1 episode, 1998
- Tom Scharpling
- Â Man in Audience 1 episode, 1998
- Brian McCann
- Â Crazy Businessman 1 episode, 1998
- Sean Harris
- Â Vocals - Little Donny Theme Song 1 episode, 1998
- Adam Sietz
- Â Gay Audience Member 1 episode, 1998
- James Mount
- Â Frat Boy 1 episode, 1998
- Jimmy DellaValle
- Â Frat Pledge 1 episode, 1998
- John Mondin
- Â Pirate 1 episode, 1998
- Aaron Bergeron
- Â College Student 1 episode, 1998
- Tim Washer
- Â Ace 1 episode, 1998
- Nidhamu Askari
- Â Extra 1 episode, 1998
- Christopher Himes
- Â Frat Boy #1 1 episode, 1998
- Shannon Manning
- Â Chef / ... 1 episode, 1998
- Marian Rosin
- Â Bathroom Lady 1 episode, 1998
- Julie Mullen
- Â Prostitute 1 episode, 1998
- Mike Trupiano
- Â Jesus 1 episode, 1998
- Trish Gray
- Â Reset Smiths 4'10 Girlfriend 1 episode, 1998
- Tina Fey
- Â Kerri Downey 1 episode, 1999
- Joe Lo Truglio
- Â Airduct Friar 1 episode, 1999
- Andy Daly
- Â Bathtub Friar 1 episode, 1999
- RZA
- Â Bobby Digital 1 episode, 1999
- John Gemberling
- Â Factory Worker 1 episode, 1999
- Jamie Denbo
- Â Hooker 1 episode, 1999
- Seth Morris
- Â The Real Jesus 1 episode, 1999
- Danielle Schneider
- Â Spirituality Expo Patron 1 episode, 1999
- Liche Ariza
- Â Ticket Scalper 1 episode, 1999
- Peter Stickles
- Â SWAT Team Member 1 episode, 1999
- Brad Aldous
- Â Cyborg Butler 1 episode, 1999
- Jake Fogelnest
- Â Chris 1 episode, 1999
- John D. Bair
- Â Roady 1 episode, 1999
- John Cahill
- Â Hazmat Guy 1 episode, 1999
- Kelsie Lynn
- Â Dialect Competitor 1 episode, 1999
- Ari Voukydis
- Â John Denver Fanclub Member 1 episode, 1999
- Stelianie Tekmitchov
- Â Sister Sue 1 episode, 1999
- Armando DÃaz
- Â Stair Person 1 episode, 1999
- Katty Biscone
- Â Soup Woman 1 episode, 1999
- Jon Morgenthau
- Â Japa-noi Tretching Student 1 episode, 1999
- Irene McGee
- Â Self 1 episode, 1999
- Douglas Scott Sorenson
- Â Police Officer 1 episode, 1999
- Vanessa Query
- Â Kimmy the Coma Girl 1 episode, 1999
- Ed Zareh
- Â DEA Agent 1 episode, 1999
- Jason Mantzoukas
- Â Orgy Man 1 episode, 2000
- Jessica Chaffin
- Â Junkie Cheerleader 1 episode, 2000
- Eric Slovin
- Â Husband 1 episode, 2000
- Dannah Feinglass Phirman
- Â Benny's Mother 1 episode, 2000
- Ali Reza
- Â Photographer 1 episode, 2000
- Jason Altman
- Â Big Red Cat 1 episode, 2000
- Kelly Sebastian
- Â Classmate 1 episode, 2000
- Mark Sarian
- Â Dancing Lawyer 1 episode, 2000
- Jim Kohn
- Â Crazy Christian Basketball Player 1 episode, 2000
- Mary Dimino
- Â Nurse 1 episode, 2000
- Bex Schwartz
- Â Nurse Violet 1 episode, 2000
- Tom Dheere
- Â Thunderballer 1 episode, 2000
- Jesse Lubinsky
- Â Award Ceremony Thug 1 episode, 2000
- Jonathan Weirich
- Â Crazy Christian Basketball Player 1 episode, 2000
- Jonny Spanish
- Â Grim Reaper 1 episode, 2000
- John Capo
- Â Various 1 episode, 2000
- Mischa Kischkum
- Â Doctor Diaz 1 episode, 2000
- Melissa Mary Ganas
- Â Girl in Line 1 episode, 2000
- John W. McKelvey
- Â Crazy Christian Basketball Player 1 episode, 2000
- David Berman
- Â 50s Football Player 1 episode, 2000
- Nathan Zen-Sapien
- Â Student protester 1 episode, 2000
- Ben Dasaro
- Â Home plate Umpire / ... (uncredited) 3 episodes, 1999-2000
- Robert Myers
- Â Businessman / ... (uncredited) 3 episodes, 2000
- Edgar Nicholson
- Â Police Officer / ... (uncredited) 2 episodes, 1999
- Elliot Flament
- Â College Student / ... (uncredited) 2 episodes, 2000
- David Vincent Bobb
- Â Frat Pledge (uncredited) 1 episode, 1998
- Jimmy Negron
- Â Camp kalterman kid (uncredited) 1 episode, 1998
- D.B. Frick
- Â Angry Mob Member (uncredited) 1 episode, 1999
- Sara Barnett
- Â Stroller (uncredited) 1 episode, 1999
- Regina Palian
- Â Swinger (uncredited) 1 episode, 2000
- Eric Schaefer
- Â Homeless Man #1 (uncredited) 1 episode, 2000