It's probably all been said before, but this film is worth watching/hearing for the sound alone. The surround effects are incredibly effective. In many films, surround is more of a novelty, but in Cast Away it really does add another dimension. The plane crash sequence is almost disturbing. When the aircraft depressurises, wind howls around the room. Rain is so realistic it will have you looking out the window to check the weather. Waves crash on the beach with a thundering roar. HIghly recommended.