So...I've seen it twice now. The first time I was so overwhelmed by emotion that I had trouble sorting out my thoughts. This is my second favorite of the books for several reasons. Among them the fact that this is basically Draco and Snape's story. Even as much as it is Harry's and Tom's. The book itself is flawed, but there are many points in the story that I can't help but love, despite the ridiculous teenage drama.
The movie is far less so. Obviously, it can't follow the book exactly. That would have taken three movies worth. But there were some distinct disappointments when it came to things left out, or reactions in general.
Overall, worth a viewing, but I wouldn't expect it to be the best of the series if you have yet to see it.
( Here be the spoilers )Those were my major reactions, though I'm sure I've forgotten something here or there, but I'd say I've rambled on far long enough. Overall, not bad. Just not great like I know it could have been.