Looking for some legitimately scary movies?

I'm seeing this girl, she love scary movies and i love scary movies. I have seen tons on scary movies with the past couple years and the only one that scared me is The Fourth Kind. I want to really scary movies, not that just make me jump but like freak me out! My friends and I go on demand with comcast and watch fearnet movies occasionally but most of then are terrible. Anyone have some good legitimate scary movies they know of? Please dont list me with "Freddie" or "Jason" or "Halloween" movies. I want to be scared like I am when I play Amnesia: Dark Descent (If you don't know what I'm talking about its a game that will scare the **** out of you!).