Set some water on to boil (you'll need a cup of boiling water)
Melt the Unsweetened Chocolate and butter together. I usually use a Pyrex Measuring Cup and a microwave for this, but you can use a double boiler on the stove top.
In the bowl of a stand mixer, combine the flour, sugar, cocoa powder and baking soda. Mix it up a bit.
Turn on the mixer, and pour in the chocolate/butter mixture... mix to combine.
The mixture will look thick at this point, don't worry, it will loosen up.
Add the buttermilk, eggs and vanilla.... mix until combined.
Slowly add the boiling water... SLOWLY, or you'll be wearing it (you do have an apron on, right?).
Run mixer on medium until everything is all mixed up and smooth-ish.
Scoop the batter into the prepared cupcake liners. I use an ice cream scoop with a thumb release for this (keeps it neat), but you can use a spoon. (You want to fill the standard cupcake liners 2/3 full.)
Bake 20 minutes.
Let cool on a rack.... (Don't even THINK about trying to fill and frost these cupcakes until they cool.. what a mess.)
They cool? Did you touch them? On the bottom too?