A longstanding joke in the series involves Peter making disparaging remarks about New Jersey.
Peter Venkman (I):
Let's see. I can never remember if it's positive to negative or positive to positive.
Though the series takes place in 1980s New York City, the traffic lights in some episodes only have red and green light - no amber
Several episodes have different music used in different scenes, either a pop song by Tahiti or standard series music. These episodes sometimes appear on home video or different TV airings. For example, in the episode "Knock, Knock", when the Ghostbusters are on the train, sometimes you'll "The Bogeyman" by Tahiti, and sometimes you'll hear a remix of the theme song. The long-running Ghostbusters' website Spook Central (SpookCentral.tk) has a detailed list of these Alternate Episodes.