So I just happened to watch last night's episode after SHIELD (which I just happened to watch after The Flash, the only TV show I watch regularly). It was really good! I suspect that there was a little bit of backstory which I may have needed, but for the most part, because I was familiar with the concept through their ad campaigns, I was able to hop right in and go. This thread died off, though, so I guess the quality of the episode was better than usual?