My list:

The obvious: Chapo, TrueAnon, Trillbillies, Trashfuture, WTYP, Citations Needed, Blowback.

Somewhat popular here:

• The Dollop - 2 comedians go through a history story and make jokes, leans leftist but not explicitly.

• The West Wing Thing (now over) - Dollop host and another guy watch and discuss every episode of The West Wing and get very angry about it, I've never seen the show and the podcast is great.

• The Audit - West Wing Thing hosts watch things like George W Bush's Masterclass so you dont have to

• A More Civilized Age - Leftist review of Star Wars The Clone Wars

• We're Not So Different - Podcast about Medieval history with Dr Eleanor Janega who was just on one of the Hell on Earth appendix episodes

Probably not as known here:

• The Urbanist Agenda - New podcast from Not Just Bikes. Only 2 episodes so far.

• Dear Hank and John - Hank and John Green answer listener advice and give dubious advice

• SciShow Tangents - Science quiz show by Hank Green

• Lateral - Comedy(ish?) quiz show by Tom Scott. If you've seen the BBC show QI, its exactly the same thing.

• Rooster Teeth Podcast - People from Rooster Teeth talk about whatever, I just like the vibe if I'm out of other things.