I've read articles on the benefits of capsaicin and the Indonesian and African peppers are among the hottest in the world.
We grow 4-5 different varieties for seasoning and cooking. Hottest we grow is the Habanero: 150,000-325,000 units.
The Reaper and the Jolokia are nos. 1 & 2 respectively in Scoville units.
FYI:
The most common hot pepper, the Jalapeno is rated 2500-8000 units
Jolokia: 1,020,000 - 1,578,00 units
Reaper: 1,210,000 - 2,100,000 units
Commercial grade pepper spray: 2-3,000,000 units
Police grade pepper spray: 5,300,000 units
Yikes!
Duane