I listen to a lot.
Wrestling:
Art of Wrestling
Talk Is Jericho
How2Wrestling
The Steve Austin Show & Unleashed (A lot of garabage but a ton of episodes to pick from.)
The Ross Report (Interviews start about 20 minutes in xD)
Comedy:
The Dollop (History related)
How Did This Get Made? (Shitty movie reviews)
Horror:
The No Sleep Podcast
Campfire Radio Theater
Creepy (creepypasta)
Knifepoint Horror (Simple no frills, just quality stories)
Lore (Scary folklore history)
Midnight Marinara (Creepypasta)
Pleasing Terrors (Same as Lore, but I like it better)
The Witching Hour (Horror review/analyze)
We're Alive(Think an audio version of the Walking Dead but much better)
History:
Hardcore History (Listen to this if you like history at all. Beware episode are long, but worth it.)
Damn Interesting (Love this one a lot too.)
A History of the World: 100 objects
Revolutions
Romance of the Three Kingdoms Podcast ((Ever heard about Dynasty Warriors? Yeah it's about that. Probably a bit dense/obscure for western audiences, but if you're familiar with the literal hundreds of historical figures it talks about you won't get lost. Funny and endearing podcast, host does his best to make it accessible. Don't know how easy to follow it would be for people new to the story. Many characters have very similar sounding names(Chinese). If you don't already know the history it might get very confusing.))
The History of Rome (If you love Roman history, this is it. Hundreds of episodes and covers the entire history of Rome, more or less. Fantastic series.)
Politics/News:
Common Sense (Most sensible man in America. Dan Carlin is a saint.

)
Counterspin (Takes a measured approach on the news of the day. Breaks down mainstream media stories that are being "spun".)
Other:
footballguys (NFL Fantasy Football)
Discovery (Documentaries)
Hostile Worlds (Outer space stuff)
BBC The Documentaries
WTF with Marc Maron (Some gems to be found, interviews famous people)