I think they really need their own thread ...
The kitchen/shop is located in Bishop Arts, but a nice selection (depending on when you go) is sold at Avoca on Magnolia (indie restaurant row) in Fort Worth (a coffee house).
Tried FM 1410 (hope I'm remembering the number right) today, and it is quite, quite good. Sadly Avoca was sold out of my new favorite, blackstrap fudge.
November is the timeframe for the potential Dude, Sweet Chocolate expansion at Avoca.
I tried the iced mocha today (I think all their chocolate drinks are made with DSC chocolate, but I did not confirm this one)--it was forgettable.
Other memorable DSC items are the blue cheese fudge and the hot chocolate mix with housemade marshmallows. They now make other marshmallows, which I haven't tried yet.