I'd like to think of myself as a theorist when it comes to podcasts, Thornvale in particular. I really like the CastJunkie network, and shows like Monster Hour, and Shrimp and Crits!
The Critshow's first and third season are really good, if you like self-insert stories.
Listened to TAZ Graduation as a purely academic exercise. I can say confidently I now know how to not to run a game, including mistakes I had made previously. Listen if you are thinking of running a game, AND NO OTHER REASONS! PLEASE DON'T SUBJECT YOURSELF OTHERWISE!!