R.M. Richards Director Alan Arkin Rafferty Actor Sally Kellerman Mac Actor Mackenzie Phillips Frisbee Actor Alex Rocco Vinnie Actor Charles Martin Smith Alan Boone Actor Harry Dean Stanton Billy Winston Actor George O'Hanlon Jr. Roy - Gas Station Attendant Actor David Proval The Incessant Talker Actor John Kaye Screenwriter Michael Gruskoff Producer Art Linson Producer Ralph Woolsey Cinematographer Walter Thompson Film Editing Artie Butler Original Music Joel Schiller Art Director Donfeld Set Decoration