Creationists love to insist that "order" cannot arise spontaneously, and so this is "proof" that evolution does not and cannot occur. This is, of course, ridiculous, because self-organizing systems are actually quite common.
Here's a really neat example. Because the metronomes are placed on a movable surface, they can exchange energy, and this ultimately causes all of them to synchronize themselves. It's really fun to watch. I kept waiting for that one near the lower right to finally get with the program.