Jason Schwartzman (Max Fischer)
Bill Murray (Herman Blume)
Olivia Williams (Rosemary Cross)
Seymour Cassel (Bert Fischer)
Brian Cox (Dr. Guggenheim)
Luke Wilson (Dr. Peter Flynn)
Ed Geldart (Security Guard)
Kumar Pallana (Mr. LittleJeans)
Keith McCawley (Donny Blume)
Connie Nielsen (Mrs. Calloway)
Kim Terry (Mrs. Blume)
Mason Gamble (Dirk Calloway)
Sara Tanaka (Margaret Yang)
Stephen McCole (Magnus Buchan)
Ronnie McCawley (Ronny Blume)