Dead Space 1 in the dark, home alone, everything silent and then my dog starts dreaming making these weird noise - Most horrific experience ever!

First time I seen it because of the well done camera footage - Cloverfield.
Any film that is slow and predictable, even though its predictable and I am totally expecting it I still jump, like paranormal activity.
Watching programmes about old abandoned ruins or asylums - The Paris Catacomb Lost Man video was creepy and the whole place looked creepy "Empire of Death", accurately named

Jan Svankmajer's http://www.youtube.com/watch?v=iuETNWAIzVM. The rabbit is creepy

every version of alice in wonderland is just plain creepy.

Delicatessen is a great film, but I don't know if it's really disturbing. I mean it's got grit but compared to most post-apocalyptic/dystopian films it's really quite sweet in most parts.

Pleasantville.

I wouldn't say it was a creepy movie but it was damn good. One of my favorites.

Sin City comes to mind. I don't remember a thing about the plot but I recall it was pretty strange.
I also watched a bit of A Clockwork Orange and it was pretty disturbing, I never saw most of though.
Also The Fourth Kind was kind of creepy sometimes. It wasn't a good movie but it had its moments.

I haven't seen most of what you listed but these two stick out for me so I'll just agree that these two were creepy. A lot of people I know didn't like shutter Island at all but I thought it was a great movie.
The descent 2 was alright but it doesn't compare to the first one which was all around much better.

Alien being my fav I'm throwing out Pandorum as a decent space horror flick that many have not seen.

why is liking something older than yourself 'wierd'

Donnie Darko was definitely a bizarre film.

That someone thought it was a good idea to make a sequel was bizarre as well.