Argiedude at Anthroforum has been making a huge effort compiling the available Y-DNA data for Africa south of the Sahara. The following map is the result:
A smaller version can be found HERE (useful for rapid comparisons but the legend is not readable and lacks the locator inset).
I think it is a most interesting piece of info and therefore I reproduce it here with permission.
Source: Anthroforum (you can find the raw data there as well). Author Argiedude.