I'm weird when it comes to what makes the hair on my neck stand up. I think the one of the scarriest things I've seen in a movie is that one segment in Creepshow 2 and that blob/oilslick thing on the water. I hate water out in the middle of nowhere, like lakes anyway, so that has always creeped me out.
Does anyone remember a movie in the 80's that had Tawnie Katain in it called Witchboard? That movie really messed with me when I was about 10 years old.
Anyway, I love the classics, The Exorcist, and everything. To me, there is nothing more eerie than a prosthetic human. Usually, the faker it looks, the creepier it is to me.
Take for instance:
Good horror IMO, should envelope you in the story, and scarry horror should make you feel "this shouldn't be happening!". That's the reason I have a natural bias against any horror that tries to explain itself scientifically, it should be supernatural IMO.
I can think of many scenes in horror that "disturb" me, that I know are well underplayed. For instance the gravesite scene in Carrie is scarry, but to me the scarriest part of the film is when her house is caving in and it focuses in on that little statue of Jesus/??? with the glowing eyes. That is freaky, also the voice of Reagan in the exorcist when she turns her head 180 degrees "Do you know what she did?"
The scene when regan head spin for the first time, and then cuts to her bloddied face to say " do you know what she did? your ****ing daughter"
is for me the scariest moment in cinema ever.