Hy Averback Director Peter Sellers Harold Actor Jo Van Fleet Mother Actor Leigh Taylor-Young Nancy Actor Joyce Van Patten Joyce Actor David Arkin Herbie Actor Herbert Edelman Murray Actor Salem Ludwig Father Actor Louis Gottlieb Guru Actor Grady Sutton Funeral Director Actor Jorge Moreno Mr. Rodriguez Actor Ed Peck Man in Dress Shop Actor Eddra Gale Love Lady Actor Janet Clark Mrs. Foley Actor Paul Mazursky Screenwriter, Executive Producer Larry Tucker Screenwriter, Executive Producer Charles H. Maguire Producer Elmer Bernstein Original Music Philip H. Lathrop Cinematographer Robert C. Jones Film Editing Pato Guzman Production Design Audrey A. Blasdel Set Decoration Theadora Van Runkle Costume Design