Columbia Pictures/Courtesy The Neal Peters Collection

Director: Ivan Reitman

Cast: Bill Murray, Dan Aykroyd, Sigourney Weaver, Harold Ramis

Domestic lifetime gross (adjusted for inflation, 2014): $541,962,900

Famous quote: “Don’t cross the streams!” — Dr. Egon Spengler

In the original script, the Stay Puft Marshmallow Man was just one of 50 monsters, but Reitman estimated it would have cost $300 million to produce them all.

Box-office totals courtesy of BoxOfficeMojo.com.