Seriously, I feel like I had PTSD for a day or two after watching it this weekend. It makes Hostel seem like a Scooby Doo episode. It not only had me on the edge of my seat, and had some really great plot twists, but afterwards it makes you feel existentially horrible and makes you ask questions about humanity you may not want to ask. Unless you really like Norwegian Black Metal or SWANS, this is way too stout for Foo Hearts. I still think of it at night and shudder and not in a fun way like I did with The Ring.
I'm totally serious. I am a horror movie fan and I wish I had never seen it.
Siu, you especially don't need to rent this.