This is a nifty podcast I've been listening to: http://www.silverballpodcast.com/. They make one every couple of months but they're about 3 hours long. You can search Silverball on iTunes.

On their homepage:
While there are probably thousands of podcasts out there today, there doesn’t seem to be any dedicated to discussing topics for those just discovering the joy of collecting pinball and video games for your gameroom. Still reliving their childhood, Rob Craig and Steve Rothschild host The Silverball covering at least one feature topic for collectors and enthusiasts during each episode. Also included are regular features like:

When it was 19xx - We select a year and discuss popular music, movies, television shows, and of course the pinball and video games of the year.

I saw it on eBay - Rants about what coin-op equipment is currently being sold .. Or NOT being sold.

Game of the week - discussion on a pinball or coin-op video game (sometimes both)

Tech Tips, Restoration Tips, Buying & Selling Tips, and a whole lot more.

You can’t beat the price ... It’s FREE!

I'm also guilty of listening to this podcast.... I definately find Norm & Shaggy FAR more entertaining.

TOPCast - This Old Pinball's Online "Radio"? I haven't listen to it yet but it doesn't look like they've made any new podcasts since Nov 2, 2008. Lots of guest speakers though.  

I`ll check it out.  Could help fill the void where TOPcast once was. (I`m starting to miss that show)