Just watched a very interesting show. They have a series called Sound Revolution. ]Tbis episode was called "Traveling Blues". It was about the developments in the Blues from the '60's forward.
Actually, it was not really a blues show. It had an interview w/Buddy Guy and performances by Eric Clapton and Carlos Santana as well as Sweet Honey in The Rock. But it was more about the influence of the blues on other musical genres. Pretty interesting.
There's a ton of good music on this channel and I recommend it highly.