Event Horizon! Probably one of the best sci-fi horror films!

Don't really do horror films but I saw the original japanese version of "the eye" called "Gin gwai". That was pretty good.

"the fly" just because the horror is you start to imagine that its you going through the transformation.

"the thing" is a classic, watched it when I was about 10 after my parents told me to not watch it. Didnt sleep for a while after that.

and as for creepy films. the original version of "the wickerman". Simply because Nick cage ruined it like all the films he's in.