Both of those shows are pretty much dead at this point, though it seems like Retronauts had their first show in months last week and will be back once more at PAX East.
I like the developer's shows (Full Moon Show, Kojima Productions, PixelJunk Radio, Irrational Behavior, Harmonix) that feature a lot of good, interesting discussions about what they're working on, what's going on in the industry, and any guests they can get from other developers. I enjoyed Insomniac's special episodes about what went on during the making of Girl With a Stick, Resistance, and Resistance 2.
Then there are the shows with personalities that I like listening to even if they're in new places (4th String (Sports Anomaly cast), 8-4 Play, HD Nation (DL.TV cast), Geekbox, RebelFM, SModcast, Tony Kornheiser Show, Drunk Tank, Giant Bomb, Screened, Tested).