Visually it's wicked. By making the characters cartoonish they avoid the creepiness of more naturalistic animation. In fact, the more photorealistic touches are a distraction. It seems weird that characters with faces that look as though cast from Barbie's vat of PVC have natural hair. It's is though the animators were so proud of themselves that they had to include a lot of shots of moving hair, and what is probably their triumph, wet hair.
But those are minor quibbles about a near perfect movie. It's a love letter to comic book heroes, that gets the tone just right, and has loads of genuinely funny moments, without ever seeming to try too hard. Stay for the end credits too, which are done up James Bond style into a real event.
Watched "In America" tonight which is about as far as you can get from "The Incredibles." Great movie too. Again, getting the tone just right is the key to the show; there are tragic events in the movie that are underplayed perfectly, avoiding the deadly 'Lifetime Movie' treatment. If you haven't seen it, do so forthwith.