First off, let me just say: I don't scare easily - to be honest, in all the 19 years of my life that I've watched films, I've only been scared by one film - The Exorcist. But even then, it was only the bit when the demon face showed up for about 4 frames. And when the Priest's recently deceased mother went back down into the subway, for some reason.
Anyway, that was when I was about 16. Then when I was 18, I saw 'The Ring' on TV, and Jesus Christ, it scared me so much. This got me hooked on Japanese films, and I bought the 3 "Ring" films (the japanese versions). But the more I watched it, the less scared I got.
Then two weeks after, I went shopping, and saw 'The Eye' DVD. It looked cool, so I bought it. I watched it later that night. And let me tell you, my dear readers: I haven't been the same since.
To this day, I still can't go anywhere in my house at night without the lights on. Plus, I've honestly developed a phobia of elevators (watch the film - you'll see what I'm talking about then).
For me, the most scary part was the "Why are you sitting in my chair?!?" scene - that was the only time ever in my life that I actually went "AH!". (except when I played "Resident Evil 2" - when the licker jumped through the one-way mirror).
I've honestly never felt the fear and dread build up in me like that. A close second was the elevator scene.
If you watch this, prepare to be so scared that your brain will jump out of your ears. It is seriously chilling. I get so scared every time I watch the movie. Every time.
I've probably hyped it up too much now!!! It is a beautiful movie though, definitely one of my favourite. You have to watch this, it is amazing, though the climax at the end ruined it for me. Personally, I think it could have done without.
If you cross "The Sixth Sense" with "At First Sight" with a japanese theme, you'll get a general idea of this movie. No-one makes scary movies like the japanese do.