This movie is awesome to watch. Not 'fun' like a lot of other war movies try to be, but the experience is intense and I can't think of anything they should have done differently. There are very loud parts in this movie (and rightly so), but if you're sensitive to loud noises wait til it comes out on DVD. The cinematography is beautiful and the storytelling is fascinating. Also don't go if you have a weak heart; this movie is tense for most of its runtime.

Edit: On a second viewing there is a lot more to catch. I didn't realize quite so many of the secenes are played back later from a different perspective, and many of the earlier scenes take on a new meaning when you watch them knowing what's going on elsewhere/elsewhen. Still a great film, and I stand by my 5/5 rating.