Forget the remake; Tobe Hooper's original 1974 shocker remains one of the most influential and scariest experiences committed to film. Pitched as a true story (although it's not), the plot follows a group of Texas teens who stumble upon a creepy old house inhabited by a deadly and deranged family. Controversial and accused of crass exploitation, Chain Saw is partially inspired by the behavior of true-life serial killer Ed Gein, namely the chainsaw-wielding Leatherface's (Gunnar Hansen) affinity for wearing a mask made of stitched human flesh. Good times!