Mad Dog Plutonium. 9 MILLION SCOVILLE UNITS. I bought this from Amazon, because I love hot sauce. Sure $100 for a little bottle is a lot, but I will probably never run out of it. Whenever I have a big amount of something I want to heat up, a toothpick will do it.
This stuff is no joke. If you look at it for too long, you start burning. It is a solid at room temp. I will put a toothpick in it and run it around in soup/salsa/bbq marinade and it is enough to light up an entire gallon + of liquid. I got some on my hand unknowingly and luckily only touched my lip. It burned up my entire mouth.
It's fun to play with, but be careful. The Youtube videos are funny. One guy ate it straight, was acting like it was nothing, then the video cut off - he had to go to the hospital.