I'm not sure there are any podcast listeners here but I just subscribe via iTunes and listen while I work. These are a few of my favs:

Retro Gaming RoundUp is a relatively new podcast (they're on ep. 10) that covers a lot of gaming genres including consoles, handhelds, mame, arcade, etc. Each episode shows up once a month and is approx. 5 hours long. These guys are hardcore. It's pretty good ... if you like vids, that is. http://www.retrogamingroundup.com/

The Silverball Podcast finally upped their 12b episode if you're into pinball: http://www.silverballpodcast.com.

TOPcast - This Old Pinball Radio Talk Show. It isn't updated anymore but an incredible vault of interviews with the tops in the industry. Python Anghelo was a really interesting one!

The Atomic Geeks - Another podcast that's fun to listen to: http://www.theatomicgeeks.com. They tackle important themes such as Movie Redos (IJ 4, Superman, Spider-man 3), Geek Babes, Super Powers, The Geeks find a Genie, Star Wars, Desert Island Fights (Lois Lane vs. Lois Lane, Chewbacca vs. Worf, Count Chocula vs. Cap’n Crunch). Roughly an hour, once a week. They've done 40 eps so far. Funny stuff ... but I am biased; my older brother is one of the Geeks.