Halloween (not including the remake)
Friday the 13th (not including remake)
Nightmare/Elm Street (including remake)
Stephen Kings "It"
... Not sure what else
Most Helpful Girl
Not a movie, but the show Courage the Cowardly Dog freaked me out so much as a kid! I'd have nightmares.
Some of the scenes in princess movies scared me too, but to a lesser extent, like when the sand in Aladdin turns into a giant sand monster thing, and when the Beast in Beauty and the Beast is first introduced.2