Trivia: Patrick Swayze refused to do this movie if Whoopi Goldberg was not given the role of Oda Mae Brown.
Trivia: Writer Bruce Rubin's mother has a cameo in this movie. She portrays the nun who collapses after seeing how much money is on the check.
Trivia: The sound effects of the screaming and howling of the demons that drag Carl and Willy to hell is lots of babies crying, slowed down.
Trivia: Bruce Willis turned down the role of Sam because he didn't think the film would work.
Trivia: The director, Jerry Zucker, always places his mother in a cameo role. In this film she's the bank clerk that Oda Mae asks "May I keep this pen?"
Trivia: Believe it or not, the producers asked Paul Hogan to play the role of Sam but Hogan turned it down because he claimed he was too much of a larrikin to play that part. Hogan, later made a movie called Almost an Angel which was a spoof of Ghost.
Answer: For one, he was mostly insane, with periodic lucid periods. He saw the subway area as his personal property and did not want another ghost moving into and challenging his established territory.
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