I've recently started listening to podcasts while I'm working. Usually I'll start listening to things when it's either getting too loud in the office to concentrate or if I feel myself starting to zone out or get distracted and I need to refocus on my work. Those seem like times where I totally wouldn't want to listen to a group of guys talking about video games, but it seems that most of the time, that helps me focus more than anything else I've found. One of my favorite podcasts I've been told about lately is the Giant Bombcast. I haven't listened enough to really get to know the guys individually, but it's a long (2-3 hour) podcast about what the guys have been doing lately, what games they've been playing, any recent gaming news and their thoughts on it, and responses to listener e-mails.
It reminds me of the morning show I listen to on the radio where they have a list of things to talk about, but get easily distracted or go into great depth about whatever they feel like, which makes it feel more personal than just a normal news thing, but it never feels like they're trying to force their opinions on anyone (well...maybe on each other), they just share what they feel about the given topic so it never really feels preachy or manipulative. They also seem to enjoy a variety of different games and systems, so it doesn't seem very biased overall. If you've got enough time to listen to podcasts and enjoy gaming, then I would recommend listening to the giant bombcast. It pops up every Tuesday, I think in the late afternoon roughly.