James (the Amazing) Randi

http://en.wikipedia.org/wiki/James_Randi
http://www.randi.org/site/
http://www.randi.org/site/index.php/1m-challenge.html

http://www.skeptic.com/junior_skeptic/back_issues/?s=1&e=10

TED Video
http://www.ted.com/talks/james_randi.html

http://www.skeptic.com/skepticism-101/science-based-medicine/