All time favourite podcast is The Orbiting Human Circus of the Air (Best listened to around the holiday season). At this point I've memorized the first episode because I use it to fall sleep. That or Old Gods of Appalachia or Wolf 359. Both are wonderful, Old Gods is very creepy and VERY creepy to listen to while out on a walk on a trail.
Umm what else.. Caravan is VERY well done and their twitter is very funny, (IT IS A 18+ MATURE PODCAST. SO IS THE TWITTER.) It's also very body positive with a fat protagonist and its how I learned the term "love handles".