This is one of the easiest ratings I've ever given. This movie is on par with the best of Hitchcock, Shayamalan, or Stephen King. The sound editing easily deserves an Oscar, and John Krasinski is amazing both as an actor and director. All the performances are deep and heartfelt, making the tension that much greater. The tension never really lets up for the duration, which would normally be a detriment but in this movie it's perfect. Very scary, very good, definitely worth watching if you like that kind of thing.