You guys suck per horror movie scares. Ichi the Killer? That's just a gore flick, not scary at all. Though The Shining is a good pick, Black Sheep is decent as well. Audition is ok.
I would suggest the following for pure "jump out of your seat/have nightmares type scares".
1408
http://www.imdb.com/title/tt0450385/
The original Kurosawa version of Pulse AKA Kairo
http://www.imdb.com/title/tt0286751/
Takashi Miike's One Missed Call AKA Chakushin ari
http://www.imdb.com/title/tt0366292/
I personally am most affected by a Korean flick known as
A Tale Of Two Sisters AKA Hongryeon Janghwa
http://www.imdb.com/title/tt0365376/
But this one is mostly subtle mixed with only a few purely jump out of your seat scary moments. I'm more affected by the cinematography, color/saturation effects, and the soundtrack because I was originally a video student.