All around fascinating person, Richard Wiseman, brings us the mystery of the Skull. See if you can figure out the method before watching the second half of the clip. Rumor has it there is a small tell that points out part of the method!
To learn more about Richard Wiseman, go to his website at http://www.richardwiseman.com/. He was a featured performer at this years Essential Magic Conference and has several books in print with a new one to be released soon!