

After losing their university jobs, three parapsychologists start a ghost-catching business in New York City and uncover a supernatural threat that could destroy the world.
Acting
Murray's deadpan vs. Aykroyd's sincere chaos
Practical Effects
Proton packs and slime that aged weirdly well
Writing
Every line quotable, nothing wasted

Director
Ivan Reitman
Trivia, insights & behind the scenes
Stay Puft Marshmallow Man was a last-minute replacement for a generic monster; Aykroyd's original script was set in space with time travel.
The film's theme song hit #1 on Billboard and stayed there three weeks — rare for a comedy. It basically invented the blockbuster tie-in single.