I just got back from seeing it, and I have to say that it was hands-down the best movie I've seen all year.
I absolutely loved the story and the characters. I was particularly fond of Vanellope, whom I personally think stole the show. I totally wasn't expecting the story to end up going where it did, but thought everything about it completely worked. It was also great seeing so many classic characters from existing video game franchises.
IGN was completely right when they said it was the best video game movie in history and the best film of the year, and highly recommend it. If you haven't already seen it, do so ASAP.