- Michael Mislove
- Anthony Francis Figila / Mr. Mislove-Office Worker / Diner Customer
- Fred Willard
- Mr. Hardon / Mr. Willard-Office Personnel Worker / Danny the Diner Owner
- Paul Zegler
- Mr. Zegler-Office President / Diner Cook
- Steve Bluestein
- Bill Nunguesser / Diner Customer
- Harry Shearer
- Tom / Terry Lufts (as The Credibility Gap)
- Michael McKean
- Dr. Edward O'Mazuraski
- David L. Lander
- Carl Adler / Alistair Kakowski / Mr. Hickenlooper (as The Credibility Gap)
- Jim Staahl
- Reverend Billy / Dead Brother's Brother
- Tino Insana
- The Mailman
- Phil Proctor
- Walter Concrete
- Peter Bergman
- Barbara Halters
- Bob McClurg
- Ramblin'Ralph / Nick Jackelson / John E. Pluribus Unum Johnson (as 'Kansas City' Bob McClurg)
- Rowby Goren
- Dr. Harvey Holcomb
- Neal Israel
- Al
- Rickey Murray
- Stoner Guy
- C.D. Taylor
- Stoner Guy
- Edie McClurg
- Sister Simple / Cowboy Girl in Bathroom
- Mary McCusker
- Chris's Girlfriend
- Christopher Pray
- Chris
- Lynne Marie Stewart
- Kiamoka Wang
- Stephen Stucker
- Bruce 'Tushy' Smith
- Kurt Taylor
- Bob the D.A. / Black Commercial Spoke Person
- Fee Waybill
- Professor Ceedee
- Rick Anderson
- (as The Tubes)
- Michael Cotten
- (as The Tubes)
- Dody Dorn
- Nurse
- Jim Fisher
- Eddie the Dead Brother
- Prairie Prince
- (as The Tubes)
- Bill Spooner
- (as The Tubes)
- Roger Steen
- (as The Tubes)
- The Tubes
- Themselves
- Vince Welnick
- (as The Tubes)
- Joe Roth
- Weed Dealer
- Paul Willson
- Coach Bender
