If you like things like TED talks, they post most of them as podcasts so pretty much any topic you want to get into.
Joe Rogan is a bit of a twit himself, and when he's got his comedy or fight buddies on its usually not all that interesting. But he brings in interesting guests and lets them talk while asking them some unconventional questions so when he has someone worth listening to its good.
I've found myself laughing a lot at Tom Segura and his wife Christina Pazsitzky doing their Your Mom's House podcast. They really play off each other well.
StarTalk can be cool if you like Neil DeGrasse Tyson and science.
Glass Connon is great too, people acting out their DnD games. Its pretty entertaining.
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