I'll add another vote for Ritter Sport - I like the Dark with Hazelnuts version. Yum. Or Scharffenberger 80% or Dark with Ground Coffee.

I sometimes like a nice dark chocolate with a stout beer (like an oatmeal stout or similar).

My wife recently made French toast from scratch and added some bits of Ritter Sport w/ Hazelnuts melted in between slices. The best breakfast I've had! I am blessed that she went to culinary school.