Ow, this makes my brain hurt. . . .

Rotating Snakes Optical Illustion by Akiyoshi Kitaoka of Japan. More how and why this illusion works in an article on Discovery Magazine, available here. 

News: Now I am a contributor to Gizmodo, the world's most popular gadget blog! Here's post number 1:

First post: SUGAR HIGH
http://gizmodo.com/5902773/build-an-awesome-high+flying-dirt+cheap-rocket-out-of-stuff-lying-around-the-house