Tried a recipe from Michael Recchiuti & Fran Cage's Chocolate Obsession (2005). -> Very nice book with lots of details.

It was my very first time to bake cupcake, so the cake itself was not that impressive, but the ganache icing was very impressive.  Since the icing's so rich (it's almost like you're eating your favorite truffle), you might want to opt for very simple cupcake base.

When it comes to decorating the cupcakes, I have no CLUE! Oh well.. At least the cupcakes taste ok. :)