Here are 78 of the best horror movies for a frightfully good time

If you've got penchant for the petrifying, a taste for darkness, a lust for terror, you're in luck.From demonic possessions to throat-slashing serial killers, we've collected the scariest horror movies of all time, and all of them are pretty much guaranteed to leave you shaking in your shoes. True fans of the genre have likely seen top contenders like "The Exorcist," "It," "Halloween" and "The Ring." However, there are countless others just as thrilling — and chilling. But what defines a horror film? According to David E. Tolchinsky, professor of radio-TV-film at Northwestern University, a well-done horror movie is one that has deeply-felt fear at its core.“Sometimes good horror films aren’t scary when you watch them, but they stay with you for a long time and scare you in your dreams,” Tolchinsky tells TODAY.com in an email. The bottom line? Whether it's gory, frightening, thrilling or creepy, if it makes you afraid to sleep with the lights off, mission accomplished.To make it easy to...