I thought the movie effectively condensed some of the book’s exposition. The café waitress (“tosser?!”) and the fire at the Burrow were new, but they worked. The city scenes at the beginning were a marvelous visual lead-in. Fenrir Greyback needed more explanation. I liked cave scene overall, but Dumbledore’s deteriorating condition after the potion lacked plausibility. Rickman’s Snape is more quietly brooding, but I expected a little more temper/urgency in Snape's parting shots. I thought the death scene was effective, though. Overall, the acting and special effects were more sophisticated. I loved McGonagall’s sharp retorts and how Gambon's Dumbledore softened enough a few times to smile. The story was generally true to Rowling's world.