I remember seeing the movie Kids a very long time ago... I found that disturbing on a certain level. Event Horizon also disturbs me. Every time I see Sam Niell, I cringe.
Oooo, “Event Horizon”...I forgot about that one. Excellent, very scary and disturbing.
Also “The Ring.” I watched that with some fellow college friends during Spring Break in the mountains of PA during a snowstorm. VERY creepy, very well done.