Last of The Mohigans had a couple nasty scenes, like some person being burned alive and another guy got his heart cut out.
The scene in Saw, where Amanda had to cut open her husband while he was alive.
The remake of TCM was disgusting, when the guy got his leg hacked off and was then dragged down into the basement and shoved onto a meat hook. Oh yeah... and then he was tortured. 😘
But the most disturbing movie that I've ever seen has to be The Prowler. It's a really old movie, from the 70's I think, and one scene in particular showed a knife going straight down some guy's head. I haven't seen it in a while but it was really really disturbing.
How about the shit that happens at the end of Altered States? That's some fckucked up shit right there...
Oh, and how about the bit in The Hitcher when the guy whose legs are wrapped around the tree gets his feet chained to the back of the truch which promptly drives off - thus taking his legs with it, while he remains attached to the tree? Phew! Long sentence...