• 
  Arthur Hiller

  regizor

• 
  Colin Higgins

  scenarist

• 
  Gene Wilder

  George Caldwell
• 
  Richard Pryor

  Grover Muldoon
• 
  Jill Clayburgh

  Hilly Burns
• 
  Patrick McGoohan

  Roger Devereau
• 
  Ned Beatty

  Bob Sweet
• 
  Clifton James

  Sheriff Oliver Chauncey

• 
  Ray Walston

  Mr. Edgar Whiney
• 
  Gordon Hurst

  Moose
• 
  Lucille Benson

  Rita Babtree
• 
  John Daheim

  Engineer #2
• 
  Valerie Curtin

  Plain Jane
• 
  Ed McNamara

  Benny
• 
  Richard Kiel

  Reace

• 
  Fred Willard

  Jerry Jarvis
• 
  Harvey Atkin

  Conventioneer
• 
  Len Birman

  Chief Donaldson
• 
  Scatman Crothers

  Ralston
• 
  Stefan Gierasch

  Professor Schreiner & Johnson
• 
  Delos V. Smith Jr.

  Burt (as Delos V. Smith)