In my top 5 really disturbing movies

Remember how Neil described Brian's face looking like he'd been erased, like he was empty inside? This was what my face looked like when I finished watching this film. It is very rare that I feel this way due to a film, because I've watched a fair amount of messed up *beep* But this film in particular kinda left me blank. This and Irreversible with Monica Bellucci are at the top of the list of movies that I felt like throwing up after watching them. What are some movies that you think are really messed up and disgusting?