OK, look at the picture below and see which way the sexxxxy lady is spinning. Is she turning clockwise or counter-clockwise? According to this site, the way she's turning depends on your brain dominance. If you're right-brain dominant (like yours truly), you'll tend to see her turning clockwise. All you left-brain dominant folks will tend to see her turning counter-clockwise. Ain't that a kick in the head? When I first saw the picture I thought it was a hoax, and that there was no way it could be seen to turn different ways, but then I tried for a while to get it to turn the other way and IT DID. (Try looking at it peripherally for a while until it seems to have turned and then check it for yourself.) I dunno if the brain-dominance thing has anything to do with it, but it's still fucking cool.