Ichi the killer both anime and live action movie and originally a manga is some really messed up stuff so be warned , Violence Jack you can watch on youtube but i turned it off near the end with a extreme group rape scene. Those are the only other two i remember right now.
I read the manga and watched gyo. The manga is a lot better but also equally messed up but is really good. The anime is also something i wish i never watched but i would recommend the manga.