Having read the book, I can say that I loved this movie very much. Great acting all around. It follows the Swedish version very closely (which follows the book more closely). Can't wait for the next one. (the Girl who played with fire!)
I thought this was a good movie as HP movies go (if you never read the book) but it really lacked passion! Especially at the end. I was like, Is that it?" J.K. Rowling made us, the readers ,experience the passion of every excruciating moment that lead up to the end as Dumbledoor pleaded with Snape to honor their agreement. None of that was carried over into the movie. So if you've followed Harry on the big screen then go see this one also but if your planning to see the Deathly Hollows (which I think is awful that the money grabbers at Warner Brothers are splitting into two movies) then be sure to read the book first so hopefully at the end you won't have to say... "Is that it?"