Most Brutal movie ever made in terms of violence?

[Buckmulligan]

This is the reason I watch bad horror movies these days, to find out if it's possible to set a new bar for what I consider brutal (gore and twistedness). The thing is, I'm not really sure which movie is the most wretched. I just watched Hellraiser and that was pretty bad, especially because it's from the 80s. I think my vote goes to House of 1000 corpses; also, for those of you who have seen High Tension, I thought that movie may have had the most disturbingly realistic brutality.

Name some others?