I've seen Nemo too, it's pretty cute but no where near Toy Story 2 or Monsters, Inc.
Don't get me wrong here, Nemo is a big, big movie that's obviously had million of dollars and years of hard work ploughed into it, but there's something puzzlingly ordinary about it at the same time.
Pidge is correct here in that there's no adult jokes, and I think that's a slight handicap. But, any film with Barry Humphries and Eric Bana in it is worth a look.