I know, this is the plight of any show where the hosts/guests delve beyond their core areas of knowledge.
At least Retronauts isn't nearly as annoying as many other videogame-related podcasts. 
I have no idea. The only other one I listen to is Wibble, and I love it.
That's because we are both swayed by sunteam_paul's accent.

Slap a southern (U.S.A.) drawl on him and I would be much more skeptical. It's not fair, it's totally just that my Northeastern ears perk up when I hear a drawl.

(I'm joking, I'm joking. OK, I'm 95% joking. I really am wary of drawls.)