I would disagree with that. Im not a metal musician and yet I get lots of the musicical jokes. Lots of my freinds are musicians who dont play metal but they also get them. I absolutly love my show an one great thing about it is that I can show this to most of my nonmetal friends and they absolutly love it. Hehe, of course they have some good taste (I got them into Agalloch, WoY, and a few other bands hehe) but yeah... This is a great show for people who enjoy metal and even for those who dont, though I think metal heads and or those who at least know about metal will get the most out of it. It is not needed though. Really the show kinda seems like a metal spinal tap... and you dont have to enjoy rock to enjoy spinal tap.
... Yeah... Im basicly obsessed with this show.