Ray is shown sleeping with his Stay Puft Marshmallow Man doll.
According to Ray, prior to this episode they had never dealt with Vampires.
During the werewolf's transformation, it bellows the same sound as Slimer in the original Ghostbusters film.
In the graveyard, one of the tombstones in the foreground clearly bears the word CASIO, a very popular brand of electronic equipment in the 80's.
The town name "Lupusville" comes from the Latin word Lupus which means wolf.