After seeing and reading about Qahtan's  Guinness Chocolate Cake and how delicious it is, I had to try it.  Documenting my try, which was made with Murphy's stout rather than Guinness (it's what I had) are these pics:

It turned out of the pan beautifully, Hooray!

It is a very chocolately cake, not too sweet, with a nice depth to the flavor.  I have since bought the Guinness and may try this and the gingerbread again.