I recommend Welcome to Nightvale (Which is amazing, and you should be listening to it: http://www.welcometonightvale.com/), The Technical Difficulties (A trivia show starring Tom Scott (of emoji keyboard fame) and friends http://www.techdif.co.uk/, Radiolab (it's fricking Radiolab: what else do you want?), 99% invisible (loved Radiolab? you'll love this, too), Ask Me Another (trivia, and music by Jonathan Coulton: any questions?), and finally the recently ended YouTube series Let's Drown Out (Ben "Yahtzee" Croshaw and Gabriel Morton play videogames of varying quality, and snark over them).