I ran across this video test measuring which hemisphere of your brain is dominant. I don't know if this actually measures what it says it does or not but would be interested in seeing it's potential application if it does. I see some students that show definite preferences to one side of the brain. If you watch this video and then do IM with me, let me know which direction the dancer spins Then post IM watch again and let me know if you can get her to spin the other direction. I can get her to spin both directions, but one way still dominates.