Not exactly retrogaming but they do get into gaming history and pedigrees, I ran into a cool podcast just his week, Idle Thumbs. Some of the guys on it are from Gamesutra and ShackNews so they really know their stuff and are usually pretty funny.
http://www.idlethumbs.net/
And if anyone was into some of the decent 1up gaming podcasts, some of those guys that were recently fired are starting up a new podcast called RebelFM. Listened to the first episode today and it was pretty good.
http://www.eat-sleep-game.com/news/2009/01...e-1-of-rebelfm/