When I first saw this movie I was disappointed by the amount of information left out from the book. But when I saw the movie for a second time, I realized there was no possible way to add in the information adored by readers without withdrawing the appeal of the movie to non-readers.
In addition to being a great Harry Potter movie, the character development was greater than in previous films. You really get to see Harry, Ron and Hermione interact with each other and have a great few laughs out of it!