Check that out. it's really cool. They are different optical illusions. The first one is a silhouette of a woman where you have to decide if she is spinning clockwise or counter clockwise. It shows if you're left or right brained. First I saw her going clock wise, but then when I looked down all of the sudden she switched and started to go the other way. When I look away, it switches back and forth. It doesn't really change direction though, it's all in your mind.. woahahahahaha Guess I can use left or right.