William L. GuisewiteActingNo biography available.Known For6.2Cathy's Last Resort19886.0Cathy's Valentine19898.0Cathy1987Fan ClubNo Nerds have favorited William L. Guisewite yet — be the first.All fan clubsFrom NerdspinFilmographyActor31989Cathy's ValentineFilmBill, Cathy's Father (voice)★ 6.01988Cathy's Last ResortFilmBill, Cathy's Father (voice)★ 6.21987CathyFilmDad (voice)★ 8.0