This film briefly interrupted Star Wars: Episode IV - A New Hope (1977)'s 15-week reign at the number one spot at the box office in October 1977. Star Wars returned to the top spot the following week.
According to screenwriter Larry Gelbart, director Carl Reiner initially envisioned his oft-partner Mel Brooks playing God, and Woody Allen playing Jerry Landers.
Most of Donald Pleasence's role was cut from the final film. Hence, he is fourth-billed, despite being in only one scene and having very little dialogue.
When Jerry is in the hotel room about to give God a quiz, The Dick Van Dyke Show (1961), is playing on the television. Director Carl Reiner created and acted in The Dick Van Dyke Show (1961).