I enjoyed Harry Potter and the Half Blood Prince a great deal. Although a darker movie than the early ones, there was still enough humor to keep it from being depressing. However, I thought the idea of the half-blood prince was blown over. Yes, Harry had his text book, yes it helped him with things, but it was as if it wasn't a big part of the movie. It was not explained why Snape was called that and if you hadn't read the books, you wouldn't know. I realize the movie can't cover everything, but since this was the title of the movie, I felt they should have addressed it more thoroughly.