• 
  Les Mayfield

  regizor

• 
  Samuel W. Taylor

  scenarist
• 
  John Hughes

  scenarist
• 
  Bill Walsh

  scenarist

• 
  Robin Williams

  prof. Philip Brainard
• 
  Christopher McDonald

  Wilson Croft
• 
  Marcia Gay Harden

  dr. Sara Jean Reynolds
• 
  Clancy Brown

  Smith

• 
  Jodi Benson

  Weebo
• 
  Ted Levine

  Wesson
• 
  Bob Sarlatte

  Rutland Coach
• 
  Wil Wheaton

  Bennett Hoenicker
• 
  Scott Michael Campbell

  Dale Jepner
• 
  Raymond J. Barry

  Chester Hoenicker
• 
  Dakin Matthews

• 
  Scott Martin Gershin

  Flubber
• 
  Edie McClurg

  Martha George
• 
  Leslie Stefanson

  Sylvia
• 
  Dan St. Paul
• 
  Zack Zeigler

  adolescent
• 
  Malcolm Brownson

  tatăl
• 
  Bob Greene
• 
  Ryan Van de Kamp Buchanan

  Student
• 
  Nancy Olson

  Secretary at Ford Motor Company
• 
  Tom Barlow
• 
  Teresa Couch
• 
  Sam Lloyd
• 
  Martin Andris
• 
  Julie Morrison

  Weebette (voce)
• 
  Jonta Davis
• 
  John Edward Cabrera
• 
  J.D. Walker
• 
  Elmer J. Howard
• 
  Cabran E. Chamberlain
• 
  Benjamin Brock
• 
  Antonina Henderson
• 
  Adryenn Ashley

• 
  John Hughes

  producător
• 
  Ricardo Mestres

  producător
• 
  Nilo Rodis-Jamero

  producător
• 
  Michael Polaire

  producător
• 
  David Nicksay

  producător
• 
  Catherine Meyers

  producător
• 
  Bill Ryan

  producător
• 
  Dean Cundey

  imagine
• 
  April Ferry

  costume
• 
  Michael A. Stevenson

  montaj
• 
  Harvey Rosenstock

  montaj
• 
  Danny Elfman

  coloană sonoră
• 
  Andrew McAlpine

  design de producţie
• 
  Daniel Loren May

  decoruri