Three scientists start a ghost extermination business and somehow Bill Murray barely has to try.
Fun fact: Dan Aykroyd wrote the original script for himself and John Belushi, who died two years before filming.
Bloke accidentally shows up to every major moment in American history and doesn't seem that fussed about any of it.
Fun fact: Tom Hanks took no salary and instead accepted percentage points, eventually earning him over $40 million.