Jolokia peppers are rated as the hotest peppers in the world.  This is a newer entry in the extreme hot sauce category and must be used with care.  I once gave a bottle of a slightly less hot Dave's Insanity Sauce to a friend who claimed he liked things hot.  He used it like he would use his normal hot sauce and almost set himself on fire.  This particular sauce should be used a drop at a time in chili or similar foods until you determine your tolerance.  Keep a cold drink nearby, and be careful not to burn a hole through your chair.