Favorite podcast?

[toef]

I recently (within the last month or so) finally got pulled into the whole podcasting thing. Until then I only had a vague idea what was out there, and actually thought some of the better ones would actually cost money.

Anyhow, despite all the older episodes of stuff piling up in iTunes, I still feel like I can always use another good podcast [or two] to subscribe to.

So does anyone else listen to podcasts, and, if so, which ones are your favorite/which would you recommend?

My favorites (that I recommend as well):

Car Talk - I heard these guys on the radio sometimes as a kid, and now it's a lot easier to just get the podcast, instead of tuning in the 1 time per week that it's on

Dan Carlin's Hardcore History - this guy loves history, and has an interesting way of tying ideas together

Various HowStuffWorks.com podcasts - some of the stuff they cover in their podcasts (they have a few) can be pretty pointless, but some of it is actually pretty interesting to learn about, though they never really cover anything in depth

In Our Time - some of the stuff they cover in their podcast can be pretty pointless (like obscure parts of British history...it's a British podcast, so I understand why they do it), but sometimes they hit a topic that's really interesting (like one about neuroscience a couple weeks ago) that is pretty interesting, and they cover it fairly in depth (about an hour long per episode)