• 
  Jason Ritter

  Matt
• 
  Bel Powley

  Carrie Pilby
• 
  Colin O'Donoghue

  Professor Harrison
• 
  Eddie Izzard

  Dr. Petrov
• 
  Tom Wilkinson

  Mr. Pilby
• 
  Vanessa Bayer

  Tara
• 
  Ben Winchell

  Cy
• 
  Mahaley Manning

  Amanda

• 
  Gabriel Byrne

  dl. Pilby
• 
  Nathan Lane

  Dr. Petrov
• 
  William Moseley

  Cy
• 
  Desmin Borges

  Douglas
• 
  Cornelia Guest

  Mrs. Rubin
• 
  Doris McCarthy

  Party Guest
• 
  Poorna Jagannathan

  Fliss

• 
  Danielle DeWulf

  Harvard Student
• 
  Guy Sparks

  Bouncer
• 
  Gregory Diaz IV

  Obnoxious Kid
• 
  Joel Michaely

  George
• 
  Zachary Infante

  Davy
• 
  Julian Graham

  Marcel
• 
  Scott Keiji Takeda

  Ronald
• 
  Andy Bustillos

  Ted