JoBeth Williams was up for a different part in this film but when she read the script, she said the only part she would consider playing was Margo and she got that part instead.
The Devil (played by Bruce Payne) makes a total of six appearances in this movie. Aside from his two speaking roles (when Steve is sent back to earth, and when he visits Amanda at 3:00 in the morning), he also makes four sneak appearances: Once as a patron at the City Grille's bar when Amanda meets Walter for lunch, once as a piano player at Sheila's party, once as a piano player (in drag) at the lesbian club, and finally as a televangelist on TV when Margo hides the murder weapon in Amanda's couch. In a directors cut, he makes another speaking role in an elevator scene.
This film was indirectly referenced in numerous episodes of Mystery Science Theater 3000 (1988). In the original television spots for the film, Jimmy Smits name was announced in an unusual way: "Ellen Barkin. Switch. Jimmy Smits. Starts Friday." The writers of MST3K found it amusing that Smits' name was announced after the title and not announced as "also starring Jimmy Smits" or "with Jimmy Smits", only as "Jimmy Smits". In various episodes, a character would say "Jimmy Smits" whenever the word "switch" was uttered or sometimes for seemingly no reason at all.
An uncredited remake of Vincente Minnelli's Goodbye, Charlie (1964), which starred Tony Curtis and Debbie Reynolds.