The Rest is History (history podcast with both mini-series... serieses... series... and one-off episodes)
Clear Eyes Full Hearts (Friday Night Lights rewatch)
The Line (Canadian politics -- there are a number of podcasts with this or a similar name, so you're looking for the one by Jen Gerson and Matt Gurney)
Stories Podcast (short stories for children; my kids like this a lot for road trips)
Old Books with Grace (old/very old book talk with a medievalist)
I love all of those things! Whenever I hit up a thrift store, the media section is my first stop. I've gotten so many great CDs and movies for next to nothing that way.