Bob Clark Director, Screenwriter Kathleen Turner Elena Actor Christopher Lloyd Heep Actor Kim Cattrall Robin Actor Peter MacNicol Dan Actor Dom DeLuise Lenny Actor Ruby Dee Margo Actor Kyle Howard Dickie Actor Leo Fitzgerald Sylvester, Whit Actor Myles Fitzgerald Sylvester, Whit Actor Gerry Fitzgerald Sylvester, Whit Actor Greg Michael Screenwriter Steven Paul Producer David Saunders Executive Producer Stephen M. Katz Cinematographer Stan Cole Film Editing Paul Zaza Original Music Francis J. Pezza Production Design Michael Roth Art Director Josh Newman Set Decoration Robert L. Zilliox Set Decoration Betty Pecha Madden Costume Design Dorothy Koster Casting