• 
  Larry Cohen

  regizor

• 
  Larry Cohen

  scenarist

• 
  Michael Moriarty

  David 'Mo' Rutherford
• 
  Paul Sorvino

  Malcolm Grommett Spears
• 
  Andrea Marcovicci

  Nicole
• 
  Garrett Morris

  Charlie W. Hobbs
• 
  Scott Bloom

  Jason
• 
  Danny Aiello

  Vickers

• 
  Mira Sorvino

  Factory Worker
• 
  Patrick Dempsey

  Underground Stuff buyer #2
• 
  Eric Bogosian

  Supermarket Clerk
• 
  Nicolas De Toth

  Griswald
• 
  Brian Bloom

  Jason's Brother
• 
  Alexander Scourby

  Evans
• 
  Tammy Grimes

  Cameo appearance (in "Stuff" commercial)

• 
  Brooke Adams

  Cameo appearance (in "Stuff" commercial)
• 
  Robert Frank Telfer

  Jason's Father
• 
  Abe Vigoda

  Cameo appearance (in "Stuff" commercial)
• 
  Rutanya Alda

  Psychologist
• 
  Harry Bellaver

  Old Miner
• 
  Russell Nype

  Richards
• 
  Colette Blonigan

  Jason's Mother
• 
  James Dixon

  Postman
• 
  James Dukas

  Gas Attendant
• 
  Peter Hock

  Miner
• 
  Patrick O'Neal

  Fletcher
• 
  Gene O'Neill

  Scientist
• 
  Catherine Schultz

  Waitress