A delightful little animated GIF that's making the rounds:

Wait, are we sure those aren't Donald Rumsfeld and Colin Powell in tuxedos?

UPDATE: By the way, upon closer inspection, it looks to me as if the penguin on the right was added to the video after the fact. The right penguin is unnaturally still but for its wing, the two penguins' shadows are of different colors and sharpnesses, the right penguin's shadow doesn't change when it raises its wing, and the ice under the hapless penguin's foot breaks an instant before the other penguin smacks it.