Chicken Run. Bar None, Aardman's Studio's greatest film. Seeing this in theaters way back as a kid, I expected this to be just Wallace and Gromit, but with Chickens (No, don't count the Penguin). But as an adult, there are quite a few instances to recognize if you read your history. Still, doesn't stop it from being enjoyable.
After the longest time, one would think such a film wouldn't need a sequel. But Holy Cluck was Dawn of the Nugget good!