Marc Maron's WTF Podcast is one of my favorites. He has had some GREAT guests. Last week I listened to an episode featuring the Widow of George Carlin. While it was (to quote Don Hendley) getting the Widow on the set, it was truly engaging for any fans of the late great comedian who died three years ago.
WTF has been bo been picked up by WBEZ and Chicago Public Media, and it should be coming to many more stations in the near future