I listen to many hours of podcasts every day. When I first started with the podcast thing I would listen to mostly video game podcasts. Now I only listen to the CAGcast and the 1up Oddcast. Just like Wombat, I now listen to almost all comedy podcasts. But I still get genuinely excited every time I see that there is a new CAGcast, and am saddened when I must concede that you guys are taking the week off.

My 2 cents -
Your format is great. The three of you have great chemistry. I want to hear about the games you want to talk about, that is why I listen.
Guests are not needed. Other podcasts bring on developers or industry insiders and I just find it boring. Boring stories along with a lot of ass-kissing seems to be the gist of the interview. Games are interesting, the people that make them usually aren't
If you do go for guests I would vote for people not in the industry. Wombat trying to get Doug Benson was a great idea. Interesting/funny people that can talk about games would be entertaining, otherwise don't bother.

What I like about your show, and probably why I'm still listening, is is doesn't seem like I'm listening "game journalists" (hope that doesn't offend any you). It just feels like I'm listening to funny guys that just like to play games and talk about them (or whatever is on their mind). Keep it up. I'll keep listening as long as you keep posting podcasts.