Ivan Reitman took this film to Spain's International Horror Festival in November of 1973. Eugene Levy ended up winning the best actor award and Andrea Martin ended up winning best actress.
The dialogue was mostly improvised.
The movie "Ghostbusters II" had a sign for this one in a scene involving a theater. Ivan Reitman directed both, as well as "Ghostbusters: Frozen Empire," where it is mentioned again.
The original principal shoot for this film was only nine days.
The budget of this movie was $9,000.