I was reading a post by Pharpo and the idea came to me that it might be fun (and educational for some) to post some of your favorite examples of Delta blues, Chicago style, Piedmont and Hill Country Blues. I'll be back in a minute to contribute.
I decided I wasn't informed enough on the sub genres, so instead I made this list. I'll link some videos as a get a better idea. I know I like the sound of Piedmont style blues particularly.