I don't want this to sound like a plug because I don't really intend it to be (to an extent!) but I do a show at garagepunk.com podcasts and there's another show called "Snake Alley" I think b movies fans would definitely dig.
You can subscribe to this station on the itunes website under the featured podcasts section but I'll just give the links to the site for now ( further directions for subscribing are featured in one of the corner tabs)
I have nothing to do with this show other than I also do show on garagepunk but after listening to a few episodes it's pretty enjoyable. Check it out here:
http://www.garagepunk.com/?cat=15and here's my show just for the heck of it, if you like demented 60s garage and psychedelic music give it a go:
http://www.garagepunk.com/?cat=17