I generally don't like the 'slasher' branch of the horror movie tree. Blood and gore are fine, but Jason and Freddy and the like don't do it for me. I prefer the sort of movies that mess with my brain, making me tense, making my heart pound, giving me that adrenaline rush.

Triangle

Not a full-on horror, more like a ghost story plus horror plus thriller plus sci-fi plus time travel, if that makes any sense. You can read my original [Celluloid Hero] review here.

Rosemary's Baby

A classic, although I only saw it for the first time somewhat recently. It does a beautiful job of making you question what was real and what was in Rosemary's head.

Jacob's Ladder

The first time I watched this I left my friend's house around 2am. He lived on a dark street, there was just the right amount of chill in the air, and I saw demons coming from every single shadow out of the corner of my eye. I'm a wuss.

The Silence of the Lambs

Okay, I get that this isn't really a "horror" movie, but it is one of the greatest movies of all time. Anytime I come across it on TV I'll stop and watch, whether it started five minutes ago or it only has five minutes left. No matter how many times I watch it, I still get tense at the right moments.