What should be the new lesson #1 in film school: Boundless technical wizardry cannot cover poor storytelling. Ultimately, every movie must tell a good story to be interesting. Pixar, who commands unparalleled technical resources, devotes more energy into producing quality stories than any other studio. (George Lucas, are you listening?)
That said, Finding Nemo is one of Pixar's lesser acheivements. Which is not to say that it is not very good (it is), but next to their other efforts (Toy Story 2, in particular), one can feel a slight lacking. The humor is a bit more juvenile than most of their movies (Mount WannaHockALugee leaping to mind), and the plot is slightly less sublime. If Toy Story 2 was aimed at 8-12 year olds, Finding Nemo is pointed more at ages 6-10.
With that said, it is still a very entertaining, well-written movie. Most of the laughs come from Ellen DeGeneres's exasperatingly absent-minded Dory, though the surfer dude/sea turtle Crush steals a few memorable minutes. The animation is, of course, beautiful and it is marvellously captured on DVD (HDTV owners will want this DVD to show off with). The set includes the theatrical widescreen, and an unsual fullscreen version, where, rather than pan-and-scan, Pixar re-rendered the movie in a larger window, so you actually see MORE in the fullscreen than widescreen.
The special features are typically rich, as they are in most Pixar movies. People who bought any other Pixar release will recognize the template.
All-in-all, a quality release just shy of perfection. Given the target audience, it should have tremendous replay value.