I've recently heard about Derren Brown.
Derren is a British mentalist and illusionist able to predict and influence people's thoughts through the use of suggestion, manipulation of the decision-making process and read the subtle physical and psychological signs that indicate what a person is thinking.
If you want to have a look at his site: Derren Brown's official web
Video taken from: http://www.youtube.com/watch?v=YQXe1CokWqQ
Text based on: http://en.wikipedia.org/wiki/Derren_Brown