I don't really like Meryl Streep and I did not think I would like her in this role especially, but she grows on you as she gives a great performance. Getting to see Pierce Brosnan sing is enough reason to see this movie. We all had a really great time.
Went with the 10 year old and he thought it was great. It has the feel of Tron or Sky Captain in that 80% of the movie has no set (CGI). The racing scenes are on par with George Lucas' pod race, only there are 5 of them :). High paced, lots of action, above average acting (all actors made younger with CGI). Overall great movie if you can sit through a 2.25 hour cartoon.