Renée Zellweger had "a couple of lines" as a customer in a beauty shop but the scene was cut.
The marquee of the theater that Johnny and Missy go to says "Johnny Zombie", which was the original title of this movie.
Adam Marcus was originally attached to direct My Boyfriend's Back (1993) for Touchstone Pictures, but the studio's parent company, Walt Disney Studios, did not want to hire a first-time director. Marcus was dropped from the project and Bob Balaban was brought on as director. To make it up to Marcus, producer Sean S. Cunningham let Marcus direct Jason Goes to Hell: The Final Friday (1993) even though he was only 23.
Producer Sean S. Cunningham hired Adam Marcus straight out of NYU Film School, they worked together on getting a screenplay by Adam's NY buddy Dean Lorey produced. Their script "Johnny Zombie" got set up at Disney, where it ultimately became My Boyfriend's Back (1993).