I was very impressed. I was concerned that this movie would disappoint me, like HP6 did, by not following the book closely enough. However, this time around they did a much better job of following the plot and the acting was superb. I thought the split was timed just right as well. I'm looking forward to part 2!
The acting was very good but the movie felt rushed, despite the two and a half hour length. There were few connections from one scene to the next. As an avid reader of the books, I was highly disappointed by the exclusion of some major scenes. The ending was very anti-climatic and didn't really feel like an ending. The book is much more exciting and wraps things up more cleanly. I know they can't include the entire book, but (SPOILER COMING UP!) excluding the battle that takes place within the castle and the funeral at the end was very disappointing and made it feel incomplete. I hope they are more faithful to the book for the final two movies.