I took my son to see Surf's Up today. Honestly, he didn't like it very much. Jennifer and I loved it. First off, it had a lot of slacker humor, which I really enjoy (all it takes is meeting me to see why). Second, The Geek was voiced by Jeff Bridges in what amounts to a reprise of his Big Lebowski role, The Dude. It was like buttah.
In the genre of CGI films, I rate it below everything Pixar and the Shreks, but above everything else.