We went to see it yesterday, in 3d.
We really enjoyed it. Scenery, effects, and costuming were really well done. The score is amazing. We really enjoyed the foley effects (both the ones that were obvious, by making them part of the story, and the not so obvious ones). Finley, China Girl, and (IMHO) Nook really stole the show. I really did like the story and thought it was well thought out and well executed. I liked the direction they went in with Kunis character, too.
The acting was a little...broad (as in, overdone). And not just by Franco (where I could see it being part of his character). The dialogue was a bit schmaltzy, IMHO. I could have done without Kunis spending 1/2 the movie as, basically, a CGI character.
But all that is certainly nitpicking. It was a very good popcorn flick, our 3 kids loved it, and my wife and I enjoyed it, too.