Donald Blank (playing "Pimples") watches the film Fiona on Fire (1978) in the movie theater scene. Blank actually had a small part in that film.
Noted Broadway costume designer William Ivey Long agreed to do the costumes for the film because he thought his friend, gay porn actor Jack Wrangler, was playing Dracula. He worked on the film for a week before he found out that Jamie Gillis and not Wrangler was to play Dracula, so he quit, although his name still remains on the credits.