Hottest Pepper?

[youngwilliam]

I am looking for the hottest pepper to grow.
I grew some orange habaneros last year that would scorch the hair off your arm, and have a friend that loved them.
His taste buds were damaged in an accident and can really only taste hot.
Anyway, I want something that will really get his buds going.
Any suggestions? Where to get seed.
I want to grow just one plant, so only need a few seeds.
Thanks.