The movie stayed in line with the book, for the most part. It left out a few minor details, but it seemed to keep the most important things in the movie. The movie leads into the second movie well with the mood of rebellion in the air.
My only qualm with the flick was that it lacked a lot of relationship development. The extent to which relationships were formed seemed to be rushed, so that some people were not very important. Overall, incredible movie - just hope for more depth in the next one!