• My Brother, My Brother and Me - love my sweet boys
• Adventure Zone - see above ^
• Glass Cannon Podcast - excellent Pathfinder Actual Play, very very funny guys
• Dungeons and Daddies - chaotic good D&D (not a BDSM podcast)
• Roll for Friendship - an amazingly silly Quest RPG podcast

It’s no longer running but I also loved Idle Thumbs (video game discussions and bird noises). I guess I listen to a lot of RPGs, in retrospect!