Incredible high waves at the Ar-Men, a 105 foot high lighthouse for the coast of Brittany, France. Direct op YouTube: http://youtube.com/watch?v=m2LeNBY_5gk&feature=related
This is a really difficult to do illusion: After you have opened the link, you will see the silhouette of a spinning figurine. Does she spin clockwise or opposite? After you have decided which way she spins, mentally try to make her spin the other way. Yes, this is possible.