Hugo Weaving
— Vincent
Brian Cox
— Irving
Jack Davenport
— Bobby
Judy Greer
— Karen
Ben Shenkman
— Martin
Joshua Rush
— Actor (uncredited)
Brooke Bloom
— Cheryl
Seamus Davey-Fitzpatrick
— Sam
Richard Fullerton
— Homeowner
James Marshall Case
— Shelly Fleisch
Burgess Jenkins
— Charles Hawthorne
Carol Kane
— Marsha
Josh Pais
— Dr. Abraham Meyer
Lee Wilkof
— Jackie Fien