The interior of Larry's apartment was the only set built for this film.
Director Paul Mazursky starred in Fear and Desire (1952) by Stanley Kubrick. The Christopher Walken character, Robert Fulmer, is based on Howard Sackler, the writer of Fear and Desire (1952).
The film cast includes two Oscar winners: Christopher Walken and Shelley Winters; and three Oscar nominees: Jeff Goldblum, Paul Mazursky and Bill Murray.
Woody Allen: Uncredited, the New York actor-writer-director, heavily made-up in make-up with a thick beard making him virtually unrecognizable, as Jake, an old love-poem seller, seen in the film's first bar scene early in the movie.