I’m not sure anything has really scared me since young adulthood. Aline is a horro film, after that they are action films (IMHO). Though really you can forget them all after Aliens.
Probably the most disturbing film of recent memory is 28 Days Later. Nothing to do with the “un-dead”. I could just see where it was going with Christopher Ecclestones little commune of army grunts. Only watched it once and not sure if I ever will again.
The Exorcist – saw it when I was about 18 and didn’t like it. To be fair I really didn’t understand it, at the time I just thought it was an excuse for violence and potty mouth. I want to watch it now but I must admit it really does give me a sense of dread when I think about putting it on.
Did “Drag Me To Hell” really scare you? I’m surprised, but as said we are all different. I thought it enjoyable but not scary and it is effectively a remake of “Night of the Demon” which was an adaption of M R James “Casting the Runes” which are in order a good B&W “horror” film and short story.
For eeriness watch “Whistle and I Will Come” with Michael Horden and directed by Jonathon Millar, recommended. I was sadly disappointed by the Mark Gattiss adaptation of last X-mas.
Personally I avoid modern horror like the plague (of zombies), well US anyway. Just Torture Porn or really excellent gore but where’s the heart?
I much prefer the X-mas stuff done in the late 60’s/70s such as “Oh Whistle.. For me there is little better than a good ghost story in a book, TV or Film at Christmas. Really completes the season for me.