I've been enjoying this guy's podcasts lately:
http://www.theguitarpodcast.net/
You can download right from that site or subscribe on iTunes etc. I think he also has a Facebook page.
He seems like a real down-to-earth fella, the kind of dude you'd wanna invite over for a BBQ and jam with. His delivery is *very* laid back and conversational.
Anyway, check him out, I like to listen while I'm exercising. Makes the time fly by.