I just came back from seeing Wall-E. It was wonderful; I enjoyed every minute of it. And it looks like it's a great movie to see with kids - I didn't have any to bring, but since I saw a matinee the crowd was full of them, many of them quite young, and after the first few minutes they were all silent, engrossed in the film. There's an emotional moment towards the end where the soundtrack goes silent for a noticable amount of time (30 seconds or so), and the entire theater was silent with it - I didn't even hear people move.
What I liked best was how it was in many ways cynical and satirical, but at the heart of it it was optimistic. It sincerely believes that in the end, man (and machine) will make the right choices. It was quite effective in that - it's been years since I've felt any genuine optimism about humanity, but, at least for the length of this movie, I believed it.