Dude that is sweeter than sweet that's one I have actually NOT seen. I love these eye tricks. If you come across any others post EM. And thats an order.
EDIT: Here you go. Click detach on the bottom of the spinning thing. Then make it full screen and look at it for 60 seconds. Then look down at your keyboard and it will do some funky things. I think I may have a huge headache now though... DO at your own risk. There's my disclaimer.
EDIT 2: I wouldn't look at it for more than 60 seconds I just did a 2 minute and when I looked at my keyboard the edges of it started falling down it seemed and lines came rushing at my face. That was so weird... Yet so strangely fun.