I recently came across a You Tube channel with long biographical lectures on some of chess' greatest players (Kasparov, Karpov, Korchnoi, Fischer, Spasky, Petrosian, Tal, Alekhine, and Nimzowitsch). Included in the bios are analyses of the players' greatest games.
https://www.youtube.com/user/jeanlucas24/videos
I've watched the Kasparov (4:12:40) and Karpov (1:41:05) lectures. Though I knew a fair amount about both players, there was still new information in it for me.
