• 
  John Madden

  regizor

• 
  Gwyneth Paltrow

  Catherine
• 
  Anthony Hopkins

  Robert
• 
  Jake Gyllenhaal

  Hal
• 
  Hope Davis

  Claire
• 
  Chipo Chung

  University Friend
• 
  Colin Stinton

  Theoretical Physicist
• 
  Leigh Zimmerman

  Friend at Party

• 
  Roshan Seth

  Professor Bhandari
• 
  Gary Houston

  Professor Barrow
• 
  Danny McCarthy

  Poliţist
• 
  Tobiasz Daszkiewicz

  Limo Driver (as Tobiacz Daszkiewicz)
• 
  Anne Wittman

  Friend at Party
• 
  John Keefe

  University Friend
• 
  C. Gerod Harris

  University Friend

• 
  Leland Burnett

  Band Vocalist