Sullivan's other feature film credits include Walk Proud (1979), The Island (1980); Ghost Story (1981); Tin Men (1987); The Untouchables (1987); Funny Farm (1988); Dead Bang (1989); The Dream Team (1989); The Abyss (1989); Guilty by Suspicion (1991); True Colors (1991), The Prince of Tides (1991); Sister Act 2: Back in the Habit (1993); The Fantasticks (made 1995, released 2000); The Jerky Boys: The Movie (1995); Canadian Bacon (1995); and Bushwhacked (1995). Of his role as a harsh husband in The Prince of Tides, in which his unwary character is given dog food to eat and consumes it with gusto, Sullivan told an interviewer he was never quite sure if the contents of a can served him by Kate Nelligan, who played his wife, was actually dog food. He added, however, that as an actor he did not believe in questioning a Director, and that whatever it was tasted fine.