This silhouette wins the award for coolest thing we've seen all day -- and it's not just because the tiny dancer above is in the buff. This is a little test that will tell you whether the left or right hemisphere of your brain is more dominant.

Instead of concentrating on her chest, concentrate on the woman's movement. If you see her spinning clockwise, that means you're using the right side, or more creative side of your brain. If she appears to be moving counter-clockwise, then that means the left side, or more logical side of your think muscle is superior.

At the Switched office, some of us see her going clockwise, others see her spinning counter-clockwise. At least one of us claims to see both, while another one of us opened this animation in Adobe ImageReady in order to isolate the frames to see if there's any direction-changing funny business going on. There isn't.

If you look at the spinning girl's silhouette below, you will think it is spinning clockwise, probably. When you check her shadow below, momentarily the spinning direction changes in your mind, and now the girl is spinning counter-clockwise.