Crispin Glover infamously appeared on Late Night with David Letterman in 1987 dressed, and in character, as Rubin Farr. This caused much confusion to Letterman as he, after almost being kicked in the face by Glover, walked off his own set while still on the air.
When Crispin Glover did his infamous David Letterman appearance in character as Rubin, it wasn't to promote the film because it was still being written by Trent Harris, and wouldn't come out for four years. But the appearance did wind up connecting onto the movie as being "the movie about the character who tried kicking David Letterman four years earlier."
When Rubin and Ed enter the abandoned trailer, they find graffiti that says "Andy Warhol sucks a big one." Crispin Glover portrayed Andy Warhol in Oliver Stone's "THE DOORS."
Feature directorial debut for screenwriter Trent Harris.
Filming started on September 24, 1990, and stopped due to the departure of actor Peter Boyle. Howard Hesseman replaced Peter Boyle and shooting resumed on October 16, 1990.