Last week a friend of mine sent me this Right Brain vs Left Brain test where you are supposed to look at an animation of a dancer turning clockwise or counter-clockwise. The direction you see her turning is supposed to tell you what side of the brain is your dominant one. If you see it turning clockwise then you use more of the right side of the brain and vice versa. They also say that if you try to focus you can change the direction.
I have tried this test by myself and with a number of other people and I have never been able to two people to see different things. If the dancer changes direction then everyone in group saw it change at the same time. What do you see? Can you get two people to see something different? Is this just a hoax we are all wasting time on?