I almost never like proper "horror" films. The number of tropes, bad acting, and complete unbelievability just takes me out of the film. I try to avoid anything involving demons or ghosts, because they're just silly concepts. That being said, these are pretty much the only movies I've ever seen that I actually found genuinely scary or creepy. I do realize I'm stretching the definition of "horror" quite a bit. None of them are particularly gory outside of maybe The Descent.
- The Exorcist (obviously)
- The Mothman Prophecies
- The Descent (except for the last 5 minutes)
- The Hills Have Eyes (original and remake, but none of the sequels)
- Pulse (original version, not that crappy American remake)
- [REC] (original version, not that crappy American remake)
- 28 Days Later
- Signs
- Barton Fink
- Silence of the Lambs, Hannibal (they're horror films, kinda)
- The Devil's Rejects
- The Shining
- The Mummy (the first one)
- High Tension (have to find the right version, though)
- Fire in the Sky
- Hellraiser 1, 2
- Evil Dead (the newest one)