alright, i've got some weird ones:
Those Conspiracy Guys - https://thoseconspiracyguys.com/podcasts/
- they're really weird, and I don't always agree with their political views (most of the time really!) every episode feels like you're listening into a few Irish guys at a bar talking about some weird-ass conspiracy theories... for 5 hours.
Bear in mind they cover a few rather right-wing topics (latest is holocaust denial, though my wife is jewish and she was the one that turned me on to them ) .
Thinking Sideways - http://thinkingsidewayspodcast.com/
more weird unsolved mystery stuff, and two of the three hosts get on my nerves, but the old guy, Joe, kind of makes the whole thing. he just comes off as this old ex-navy guy that doesn't give a shit and it's great!
Astonishing Legends - http://www.astonishinglegends.com/podcasts/
More paranormal stuff, and i bet you're beginning to see the trend! These guys are pretty laid back and normal, but they dive DEEP into some of the weirder paranormal stories/legends/theories out there. Their series on the Dyatlov Pass is what really blew me away - I think it's 3 to 5 episodes, and they cover so much information it's more like a microhistory than just a podcast. Oh their oak island one is amazing too - 5/6 episodes i think? they dive deep!
Dan Carlin's Hardcore History - http://www.dancarlin.com/hardcore-history-series/
Kind of a given. If you haven't heard any of these, get ahold of the Great War episodes - they're long, and easily the deepest (podcast) study i've heard on the Great War. I'll add the caveat that I don't dig his regular non-history show - it's too political, but this one is great! He goes deep into specific moments in history usually, but i'm not all too sure how factual he always is. He only releases one every 6 months to a year, and states that he does a lot of reading homework before he records a podcast, but i get the feeling he's pretty focused on making a dramatic retelling of his topics, so don't always take what he says too seriously. It's a great starting point to read more about a given time in history tho.
SpyCast - https://www.spymuseum.org/multimedia/spycast/
run by the international spy museum in DC. It's a little boring at times, but they have covered surprisingly recent events and cases in the intelligence community, and they have the clout in the intelligence community to often get some of the people involved in the event/case they're covering, to be there during the podcast for an interview. good stuff
Limetown - http://www.limetownstories.com/
for the sound design/ audio drama nerd in you, this is one of the most professional fictitious podcasts i've heard—and i've tried a few. it's short, but sweet if you're looking for a dramatic escape.
Last, I can't plug art+music+technology enough. I've been onto Darwin's podcast since like episode 4 or 5, and it's always riveting! Very smooth of Brian to gloss over the fact that one of the episodes is an interview with Mr. Crabtree. Damn good podcast! I'm buying a symbolic sounds Paca soon, and in the meantime I keep relistening to the Carla Scaletti episode!
that's all for now - tried to stay away from anything remotely similar to 'serial', malcom gladwell, or NPR. I dig some of the npr podcasts, but we all know about them. I'm not a fan of podcasts that only release little 30 min episodes every two weeks either, or hosts who make a blatant effort to emulate the vocal inflections of ira glass!
Oh yeah, screw song exploder. I saw it a while ago, and initially thought it sounded really interesting. it's not.