I really loved it. Saw it late last night - and wow.
The story telling, animation, script - it was soooooo funny. Absolutely 100% loved it.
The one detraction is the 3D. As is the case with so many other films in 3D it's useless and adds nothing to the film. Aside from that - great great movie.
Also the short before the film - The Paperman - beautiful.