This spoof of disaster-movie cliches centers on a nuclear-powered bus. Joseph Bologna, Stockard Channing, John Beck. Elderly Lady: Ruth Gordon. Doctor: Larry Hagman. Camille: Lynn Redgrave. Sybil: Sally Kellerman. Father Kudos: Rene Auberjonois. Shorty: Ned Beatty. Ironman: Jose Ferrer. Claude: Richard Mulligan. Dr. Kurtz: Bob Dishy. Directed by James Frawley.