Optical Illusions

I was reading Mind Hacks the other day and found some cool links. The book itself was a bit of a disappointment as it had mainly your garden variety mental and optical illusions and didn't really get into mind reprogramming as I thought it would. But I did learn the name to a weird effect I've been noticing as a computer geek. I call it the scroll-effect because I get it while I smooth scroll down a browser and the scrolling stops abruptly, causing the text to appear to float downward as my eyes are erroneously anticipating further movement. They call it the waterfall effect. Anyway, Akiyoshi Kitaoka has a really cool site with great optical illusions.