Sister Act is a movie.
Kathy Najimy . She is best known for voicing Peggy Hill on the animated television series King of the Hill , and her roles as Sister Mary Patrick in the comedy film Sister Act , Mary Sanderson in the comedy-horror film Hocus Pocus , and Olive Massery on the comedy series Veronica 's Closet . Sister Act is a 1992 American musical comedy film directed by Emile Ardolino and written by Joseph Howard . One of the most financially successful comedies of the early 1990s , grossing $ 231 million worldwide , the film was rated # 83 on Bravo 's The 100 Funniest Movies list .