As of 2012 the world's hottest pepper is the Maruga Scorpion with over 2 million heat units.
http://www.huffingtonpost.com/2012/0...n_1281449.html
http://www.geekologie.com/2012/02/wo...-melt-your.php
This guy apparently just ate 5 of them...
If that's the real deal, fucking hell man. His next day flaming asshole must have killed his girlfriend. And his cat.