Hi guys. I am going with my GF to see Saw one at a friend's house. I don't want her to know I am scared of horror movies, but I saw the trailer for the Shining and had to sleep with the light on. I kept hearing "Red rum,Red rum," echoing through my head.
I agree with Pazx, just think about everything, and be a negative person about it. 'That effect is so cheap! Who would get scared by that guy?! THAT was predictable!' This will ruin the movie for you, however, and I don't suggest it. Usually just let yourself be scared, or don't. If you don't, then you shouldn't expect much from the movie.
I have never played a scary game or watched a really scary movie but I don't like the "horror" style. When I watch an horror movie I just think that what is happening is not real.