i've been asked to do an animation about a workplace where the workers are cogs who are unhappy and are helped by a friendly cog to be happier. I seem to remember a great 2D animation from a few years back with balls moving around as if in a workplace and becoming happier as the animation progressed. I loved this animation and am sure it won awards. I think it was all done in AE.
sorry about the poor description but if anyone remembers it i'd be delighted with a link.