Just came back from the Hobbit and thought it was great! Did not disappoint at all. The changes / additions generally worked well. I'll definitely be going to see it again in 2D.
Some spoilery comments:
Originally Posted by danutz_plusplus 
What I can't remember from the book is, does Gollum have any other role to play in the other movies? (did he get captured in Mirkwood or something?) I can't remember. But if he did, I hope they explore all of that in part 2 or 3.
It's been a while since I read they book but I don't remember Gollum appearing later on in the story (until LOTR). I could be wrong though.