I found the editing in the film excellent. It gave me a sense of nausea and confusion at times which helped me to empathise with the victims. I thought it was very well shot as well, particularly the scene where the only light was provided by the flash on the camera.

I totally didn't see the final twist coming but I have to agree with you on one point. Dr. Gordon was a bloody terrible actor!!! I can't imagine all the method acting in the world is gonna help you act (SPOILER)sawing off your own foot but I was disappointed with his woodenness throughout.

This is an excellent film, if you're looking for shocks you will find them. My girlfriend and I went to see it on Sunday afternoon with a relatively small crowd but everyone in the cinema reacted at certain points, more vocally as the movie progressed, it certainly captivated us for its duration and afterwards there was nothing to say except...."that was disturbed." Those faint of heart avoid.