I'll start off by mentioning Mainstream Resistance Cast. It's a monthly metal podcast done by two guys I know, one of them worked with me at Pi Studios testing AC/DC Rock Band, the other guy has a band called Spectral Manifest who I played bass for briefly. Until MSR Cast gets a new website, you can find their stuff at Metal Injection.
In other metal news, right now the massively successful independent documentary Until the Light Takes Us is getting a limited US theatrical release. Check the website, see if it's playing near you. If you've ever wanted to know more about black metal music but couldn't get past all the media hype and BS, this will be an interesting and engaging flick!