I believe that there are several strains of the Trinidad Scorpion (Butch T, Moruga and some others)
http://en.wikipedia.org/wiki/T...
Here is a quote from the above link:
"The Scorpions are so hot that, in order to cook with it, the pepper's cultivators have to wear chemical masks and body suits, and reported feelings of numbness in their hands for more than two days afterwards."