My favorite podcast at the moment: The Beat Oracle (KCSB 91.9fm, Santa Barbara, CA). They focus on the music, a lot of cool stuff from labels like Mute, Warp and others I've never heard of. Sometimes you've got to wade through a lot of crap to find the good stuff, but it's there.
My favorite track from their 11.10.2005 episode: "Caught in this affair" by Swayzak (album: Himawari, released in 2000). You can listen to it on Amazon.com. Actually the whole album sounds pretty good.
Subscribe to the iTunes Podcast directly if you have iTunes installed. You can sync new episodes to your iPod automatically.