Santa brought me an IPOD, so I have started listening to Podcasts. Does anyone have any favorites that are science (ideally astro) related?

Before IPOD, I used to watch NASA TV over the web, and I regularly listen to Science Friday online. But the podcast seems to get posted more quickly than the other media versions, and itunes handles the checking and downloading, and now I can listen even when I am not at my computer.

Anyway, I'm hoping there are some other goodies out there in addition to Science Friday (which I love).

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"I'm as accurate as any psychic. And I'm a cartoon!" -- Squidward

"Arrrgh, the laws of physics be a harsh mistress!" -- Bender