Really liked it. Saw the 12:40 show this morning, the local theater had 7 start times with at least 10 screens showing the movie and they were all sold out, including the 3:10am showing.
There were a lot of changes from the book, some I was fine with but there were a few little things that I didn't care for. I really dislike it when they change the little things for no real reason.
A few people were in costumes last night, there was some cheering and clapping at a few points and you could tell there were a lot of tears through various parts as well.
This is only the 4th film that I've seen in theaters, Order of the Phoenix was the first one I went to (the rest I saw on DVD first), but it's going to be weird knowing that there won't be another film coming next year. As far as the films and books go, I think my love for this series almost surpasses my love of Star Wars. I think it's possible that in my lifetime there won't be another series of films that will match up with Potter. LotR is close but some of my other favorites such as Star Wars and Indiana Jones weren't this consistently good for this long of a run of films.