Haven't really seen any movies that have "scared" me but there are movies that could be considered scary but because of their plots and their concept other then actually "scares".

Dead Ringers is a fucked up movie... That is one that just came to mind. It is truly fucked, but I can't think of anymore. There is alot of fucked up movies. The Shining has been mentioned... one of the best horror movies, in my opinion. Um... Night of the Hunter is a classic "scary" movie, but not with monsters and paranormal stuff. Just a scary murdering priest. Other good "scary" movies I see were mentioned are Aliens, The Thing (Remake), Silence of the Lambs and fuck yeah... another one I thought of... The Vanishing. FUCKED-UP MOVIE and a mind-bender as well. There are tons but it's rare to find a GOOD movie these days... one that's new anyway. Comedies are the only movies that are going any where in this industry because a Comedy can be as ignorant as the producer wants... the script or the directing or the acting can be as shitty as the producer wants, because as long as it's funny, it's good. Horror moves these days just aren't scary.