This sixth film does wonders for honoring the spirit of the book while keeping the movie audience entertained. The special effects are impressive as usual, particularly in the cave scene in the latter third of the film. Most of the actors were spot-on, as well. Michael Gambon redeems himself in the movie--departing from the gruff, angry character portrayed in the last few movies and bringing the film incarnation of Dumbledore back to the kindhearted, soft-spoken mentor from the books.
Overall, I believe the sixth movie is a resounding success for the franchise. It's definitely entertaining and fulfilling for the casual viewer.