Waiting for Guffman is a 1996 American mockumentary comedy film written by Christopher Guest and Eugene Levy, and directed by Guest. The film's ensemble cast includes Guest, Levy, Catherine O'Hara, Fred Willard, and Parker Posey.
The film's title is a reference to Samuel Beckett's play Waiting for Godot. As in the other mockumentary films created by Guest, the majority of the dialogue was improvised (based on Guest and Levy's story). Because the film is about the production of a stage musical, it contains several original musical numbers written by Guest, Michael McKean and Harry Shearer. The film's score was composed by William Ross.