Several friends have sent this image to me. Supposedly, the direction in which you see the dancer spinning reflects which side of your brain is dominant.
Apparentlymost people see the dancer rotating in a counterclockwise direction. When I first looked, Isaw her spinning clockwise. But with some effort--and it took a while--I was able to see the dancer rotatingcounterclockwise. What do you see, and can you make the switch?