Les Paul - The Chasing Sound DVD.
I actually bought this as a gift for my father but I had a look at it myself and found it fascinating. I had vaguely heard of Les and Mary but I hadn't realised that he was the guy who introduced the electric guitar into the pop scene in a big way. Quite an eye-opener. Performers like Keith Richards and Eric Clapton have to thank Les Paul for starting the ball rolling. A great buy, much appreciated by me - and by my Dad.