1974 Black Christmas
Scared the crap out of me the first time I saw it.
GREAT movie. One of my favs.
One film that scared me as a kid was the original Nightmare on Elm Street. Just the idea that you could die in your sleep was unsettling because you have no control. You are at your most vulnerable, and some of the Freddy imagery in the victims' dreams, at the time, was scary.
Thank for the contest CAHobbit!