I need podcasts

Podcasts make my insane commuting schedule just barely tolerable. I'm always looking for more podcasts. Sometimes I like intelligent podcasts that actually teach me something (like the BBC's In Our Time, which is a smart British dude who brings in three smart British professors to thoroughly analyze a topic usually having something to do with the Renaissance), other times I need something goofy (Mysterious Universe is pretty good for this). I also enjoy Diggnation and This Week In Tech, but sometimes the tech-oriented podcasts get boring. Al Franken is not as good now that he's hosting by himself.

What podcasts do you all listen to? What do you recommend? Hook me up.