Lou Jacobi was a Canadian character actor. Jacobi came to prominence for his role as Mr. Van Daan in the 1955 Broadway production of The Diary of Anne Frank which he reprised in the 1959 film version. He also acted in the films Irma la Douce (1963), Little Murders (1971), Everything You Always Wanted to Know About Sex* (1972), Next Stop, Greenwich Village (1976), The Lucky Star (1980), Arthur (1981), My Favorite Year (1982), and Avalon (1990).

Little Murders is a 1971 American black comedy film directed by Alan Arkin, in his feature film directorial debut, and starring Elliott Gould and Marcia Rodd. Based on the stage play of the same name by Jules Feiffer, it is the story of a woman, Patsy (Rodd), who brings home her boyfriend, Alfred (Gould), to meet her severely dysfunctional family amidst a series of random shootings, garbage strikes and electrical outages ravaging their New York City neighborhood.