I can't help with radio stations, but there are tons of podcasts. The 1up.com network has several different ones at 1UP Radio Gaming Podcasts Site on 1UP.com

There's a sports-game centered one, one focuses on WoW, one focused on PC games, one focused on 'Retro' games, and 2 general gaming ones. I listen to the 'main program', 1UP yours, whenever it's released, as well as Retronauts. They're pretty consistent with their weekly shows.

Others I listen to, though less frequently, are the CAG cast and Major Nelson.


Digg has a 'ranking' of gaming related podcasts on their site.