Not that this movie wasn't enjoyable (it was, and the teen love angst between all that characters was downright funny), but this was probably the weakest of the Harry Potter movies as far as plot goes. In the battle to fight Lord Voldemort, Harry has to find out the secret memory of one of his professors, which takes about 80 percent of the movie. In the meantime, there are quidditch matches, the typical shenanigans with Draco Malfoy, etc. - not exactly suspenseful stuff. I know this follows the book pretty closely, but maybe this (and the book) should have been folded into one of the other stories.