Harry Potter and the Prisoner of Azkaban

is a great movie based on the same book. The Potter books get darker with each book- the characters richer and the fantasy world more complicated. My only gripe was that the climax of the movie was an afterthought- that in the book, the climax is sinister and lengthy and loaded with symbolism. Had I not read the book, I wouldn't have known the end of the movie was coming. But the kids in it are growing up and becoming better actors. That's a relief!