It's no laughing matter.
Aspiring comic Rupert Pupkin attempts to achieve success in show business by stalking his idol, a late night talk-show host who craves his own privacy.
Robert De Niro
Rupert Pupkin
Jerry Lewis
Jerry Langford
Diahnne Abbott
Rita
Sandra Bernhard
Masha
Shelley Hack
Cathy Long
Frederick de Cordova
Bert Thomas
Ed Herlihy
Lou Brown
Band Leader
Loretta Tupper
Stage Door Fan
Peter Potulski
Vinnie Gonzales
Whitey Ryan
Stage Door Guard
