I was dissapointed by it. I didn't read the book, but from previous experience, theres alot of story butchering that goes on when a book gets filmed.
It all came to easy for them, its like everytime there was a problem, a Deus Ex Machina happened.
Moments like the Mountain Giant fights couldv easily been left out, it was unneeded and again they escape such a thing without a scratch.
There were some funny moments, the Troll part comes to mind, but i was overall dissapointed, and i'm a huge fan of the LotR trilogy.