When the Ghostbusters are chasing the Winged Bullfrog Ghost at the beginning, Winston has a scope attached to his Particle Thrower.
The voice actors were recorded on July 22, 1986.
When Venkman sees Bill Murray onscreen, he comments, "He doesn't look a thing like me."
The chartered jet has "GB4" on its tail.
Slimer chases after a woman who resembles Carmen Miranda, a famous Brazilian samba singer, Broadway actor, and Hollywood star from the 1940s to 1950s.