I've noticed a kind of arms-race in most of the Pixar/Dreamworks movies I've seen (not nearly all), where in the first 5 or 10 minutes there will always be some new technique being foregrounded. Sully's hair is a great example, they lay the new tech out right away both as a "we're cool" (in a positive sense!) signal to other animators and as a far point of expectations for the animation to the rubes like me. "If this goes over, everything else falls into place." I'm a little sad to see you neg "Up," though, because I thought the technical gambit there was much more sophisticated: conveying emotion convincingly from what is basically a cartoon. I think they succeeded in spades on that one.