3. ‘The Exorcist’ (1973)
Memorable quote: “The power of Christ compels you! The power of Christ compels you!”
Scare factor: No child should ever be that foul-mouthed and that convincingly scary in a movie. Linda Blair’s seminal performance is almost enough to make you believe in demons (that is, if you didn’t believe in them already). If you haven’t watched this in a while, do yourself a favor and check out the director’s cut, then go ahead and try sleeping afterward. Good luck with that.