Man, what a brilliant movie. It was a relatively contained story, but very engaging and well-written. I love Keanu Reeves.
I haven't been a fan of horror at all. I'm still not.
But I think this hyper-realist style, where everything is raw, gritty, and explicit, is the best and most harrowing form of horror. It's almost a documentary of a descent into madness. We don't even need the dialogue, just watching these characters alone gives a sense of the torment which begins to afflict them.
I really enjoyed the unique style of filming and editing used. Very unique and refreshing.