I've heard this movie uniformly lambasted here on ARFCOM. I saw parts of it a few years ago, and finally got around to renting it to see what all the fuss was about.
I happen to think this is a great movie. It is very anti-war, contrasting the natural beauty of the Pacific Islands with the horror that man creates upon them. It shows men at their worst, and at their best. I believe that any good war film should be at it's core anti-war, because no one (especially those who have fought in one) can deny that war is a terrible experience for all involved.
The film never looks at the big picture, instead focusing on the thoughts and emotions of a dozen or so of the men fighting for Guadalcanal. Their raw fear is constantly on display - despite this they go forward into battle, and pay the price for it, either physically or mentally.
There are several battle scenes that I think are very well put-together, and which stand apart from most other filmed battles. The men in them are clearly scared to death. They stumble, fall, or freeze with panic at the worst moments. Only one man in the film is truly without fear, and the war eats him as it does so many others.
The cinematography is beautiful, and the acting is outstanding. The music by Hans Zimmer is also terrific. Though there are a number of famous actors on screen, no single man dominates this film. Jim Caviezel comes closest, but only by virtue of being the first character we meet.
There is quite a bit of narration in this film, by several of the actors, and much of it is confusing. I had a hard time following their constant train-of-thought monologues.
Other than that, a terrific film all around. This one makes me want to see A New World, which is the director's newest film, and which has been compared to The Thin Red Line quite a bit. I'll be buying this DVD shortly.