Non-Flash Flash

This is a page of amazing optical illusions that I have never seen before. When I first clicked on it, I thought, oh, more Flash-based abstractions. But no, these are not Flash, they are still images that move because our eyes are perfectly imperfect. This site, making the rounds on many blogs right now, is a perfect antidote to the sadness and inanity around the September 11, 2001, commemorations.