• 
  Billy Wilder

  regizor

• 
  Francis Veber

  scenarist

• 
  Jack Lemmon

  Victor Clooney
• 
  Walter Matthau

  Trabucco
• 
  Paula Prentiss

  Celia Clooney
• 
  Klaus Kinski

  Dr. Hugo Zuckerbrot
• 
  Craig Richards

  Attorney
• 
  Ben Lessy

  Barney Pritzig

• 
  Billy Beck

  Gentleman
• 
  Joan Shawlee

  Receptionist
• 
  Dana Elcar

  Capt. Hubris
• 
  Ed Begley Jr.

  Lieutenant #1
• 
  Charlotte Stewart

  Nurse
• 
  Biff Manard

  Highway Patrolman #2
• 
  Miles Chapin

  Eddie, the Bellhop

• 
  Frances Bay

  Female Patient
• 
  Michael Ensign

  Assistant Manager