Ghostbusters (Ivan Reitman 1984)

Ghostbusters

In the middle of the film’s initial release, to keep interest going, Ivan Reitman had a trailer run, which was basically the commercial the Ghostbusters’ use in the movie, but with the 555 number replaced with a 1-800 number, allowing people to call. They got a recorded message of Bill Murray and Dan Aykroyd saying something to the effect of “Hi. We’re out catching ghosts right now.” They got 1,000 calls per hour, 24 hours a day, for six weeks.