This is one of the best metal label podcasts out there. They usually focus on one group--and since they don't sign any bad bands, you know it's good--and they interview them, and play a track or two (except on their most recent one for Whitechapel--please bring back the music!).
The hosts are top-notch: they sound like genuine people who genuinely love metal. They have a huge lead against competitors in that department.
They don't update too regularly, though, so I wish they'd fix that.