I don't know if this makes me a dork, but I do occasionally listen to NPR. I've always liked the types of subjects they discuss on air and knew that they did some music coverage. It wasn't until I started following their website, however, that I really discovered the depth (and breadth) of their music coverage.
My favorite program is probably World Cafe, hosted by David Dye. It's been a great way to keep up with my favorite artists, as well as discover some new ones.
Some of my favorite interviews:
The Black Keys