Penny Marshall Director Tom Hanks Josh Actor Elizabeth Perkins Susan Actor Robert Loggia MacMillan Actor John Heard Paul Actor Jared Rushton Billy Actor David Moscow Young Josh Actor Jon Lovitz Scotty Brennen Actor Mercedes Ruehl Mrs. Baskin Actor Josh Clark Mr. Baskin Actor Tracy Reiner Test Market Researcher Actor Oliver Block Freddie Benson Actor Gary Ross Writer Anne Spielberg Writer James L. Brooks Producer Robert Greenhut Producer Barry Sonnenfeld Cinematographer Barry Malkin Film Editing Howard Shore Original Music Santo Loquasto Production Design Speed Hopkins Art Director Tom Warren Art Director Susan Bode Set Decoration George DeTitta Jr. Set Decoration Judianna Makovsky Costume Design Paula Herold Casting Juliet Taylor Casting