I used to listen to Retronauts all the time, but I found them to be extremely jaded at times.
With the N64 podcast for example, instead of talking about all the great games it came of like there were no good games on the system that anyone could remember besides Mario64.
And the ones they could remember had "aged badly", whatever that means.
Although I have to say that their recent Famicom podcast was quite good.
The one I listen to every week is RetroforceGO!
Their knowledge doesn't go as deep into the subject of retrogames like with the retronauts crew, but it's a great podcast nonetheless.
Used to listen to IGNs Nintendo podcast, but the constant teasing of "I know something you don't, and it's so huge you're gonna burst out of your pants, but I can't tell you", followed months later by "oh, what I was talking about was The Sims go Snorkeling btw" was getting on my nerves.
That along with the whoring of their own shitty games that were supposed to be in development made me turn away and I haven't heard one since.
Dual Screen Radio isn't bad, but it can go on a bit too long sometimes. Especially when they go about some trivial detail no one wants to know.