The current round of the IRTC animation competition is entitled "Dancing". I wonder how low I'd score if I just went with art mannequins? Or could I get away with it as a retro homage to the early days of CG?
Or possibly robots — though knowing my proclivities regarding hyperdetailing, I'd spend a lot of time greebling them, and consequently each frame would likely take forever to render. Crash-test dummies?