Directed by: Ivan Reitman
Starring: Dan Aykroyd, Bill Murray, Sigourney Weaver, Harold Ramis, Rick Moranis, Ernie Hudson, Annie Potts
Audio problem: Running away from the 'bear', Tully shouts the humorous line; "I'm gonna to bring this up at the next tenants' meeting...there's not supposed to be any pets in the building." However, look at Rick Moranis' face; his lips are not moving and the line was dubbed over. (00:54:10)
Audio problem: When the Archbishop says "How are you, Lenny?" to the Mayor in his office, his lips don't match what he is saying. (01:15:55)
Continuity mistake: During the flying eggs scene, the lettuce on the right changes shape and position between angles. (00:19:20)
Ray Stantz: Where do these stairs go?
Peter Venkman: They go up.
Trivia: When Peter Venkman mentions the time Egon Spengler tried to drill a hole in his head, Egon replies, "That would have worked if you hadn't stopped me". This line was ad-libbed by Harold Ramis.
Answer: He places it on the altar just after they believe they have vaporized Gozer with the proton packs. At this point, thinking the ghost to have been destroyed, he sets it down as he believes the job is done and he will not need it.
Jazetopher