I was totally surprised at how great this film.You could feel your paranoia rise as the film went on and as you gradually learned the details of the real situation.

This is one of the few movies I've ever seen where the whole audience broke into spontaneous, loud applause a third of the way in.

The thing I enjoyed most about the film is the fact that it doesn't shy away from being a super-sized-cliche;

It is neither dumb nor smart enough to be fun, and spends way too much time with its boring human characters.