The movie was good, but being a fan of the books, I felt like they left out a lot of important details that are very important. For everyone going to see it - couple of notes you need to know - after Sirius died, he left Harry his house and of course the elf now has to answer to Harry. Also, plenty of people were confused by a major scene in the middle - splinching is when something goes wrong during an apparation and you could lose parts of your body.