Good sports podcasts: Hang up and Listen; Only a Game
Getting back to WTF with Marc Maron. He strikes me as incredibly sincere, and that's why I like his show. He clearly has anger management issues, and that's generally a trait that I can't stand in people. But the way he deals with it so openly is quite redeeming. And he interviews well. And he's pretty funny. And he gets good guests. Even his guests that I don't think I'm going to like I usually like.