Well my wife and I saw the movie this morning and we both liked it. It followed the book well. The music was horrible though but it was easy to block out. The way Ron Howard filmed the flashbacks was really sweet - I think you'll see that style copied in the future. The book has a lot of speeches explaining different things to the reader and the movie did a great job with these.
In short the book was entertaining and the movie is too - go see it.