I've tried these, as well as the Bhut Jolokia pepper. The guy in the white shirt has the most average reaction, the other guy clearly doesn't a great tolerance for spicy foods.
Remember kids, don't do peppers.
RE: Accidentally eating the world's hottest pepper
I've tried the Bhut Jolokia, but over here we call them ghost peppers, I couldn't taste anything for about 3+ hours and took me a little while to recover from it but I wanted to try it, so at least I did that.