I first heard of Joe and Robert when I attended the CM World event a few years ago, and stumbled upon their podcast earlier in 2014. As someone into content, it's a fast listen and a show that always elicits taking down a few reminder notes...not easy when you're in the car! If you're into content marketing and want to understand how this stuff actually works, this is a very easy entry point.
I also think a drinking game can be built around it too (when Joe laughs, when Robert says 'fantastic', when native advertising comes up). I mean, how can you beat that?