Before Billy Crystal was a movie star and before Jeff Dunham made ventriloquists funny again there was 'Soap'. The shorty of two sisters Jessica Tate and Mary Campbell. The Tates were rich and the Campbells were not. However both families had secrets. Starring Katherine Helmond , Robert Mandan, Cathryn Damon, Robert Urich, Billy Crystal, Robert Guillaume, Jimmy Baior, Diana Canova, Jennifer Salt, Ted Wass and Richard Mulligan .