MacNicol is known for his stage debut in "Crimes of the Heart". His movie roles include Galen in "Dragonslayer" (1981), Stingo in "Sophie's Choice" (1982), Janosz Poha in "Ghostbusters II" (1989), camp organizer Gary Granger in "Addams Family Values" (1993) and David Langley in "Bean" (1997).