Just saw this flick based on a fellow poster's recommendation and was curious what others thought about it. Personally, I thought it was incredibly intriguing (even though it moves a bit slow at times). I did have to do some research however regarding the ending (which was rather frustrating). The theories varied, but no one had a solid answer. So, who do you think sent the tapes? And less specifically, what did you think of the film as a whole?