I like how both Michael Cera and Jonah Hill go to great lengths to get as shitfaced as possible, because, even as horndog teens, they know it's wrong to sleep with a girl when she's drunk and you're not.
The first Toy Story is wittily adult and acerbic as HELL, and I love it for that. It was clearly the Pixar movie with the least possible input from Disney.
The funny thing is, they always cast these major celebs, and yet the "breakout" supporting characters loved by audiences are usually voiced by members of the animation crew. Joe Ranft as Heimlich the caterpillar, Brad Bird as Edna Mode, Pierre Coffin as all of the Minions...