I caught this Sabbath doc last night at my friends place. The first tune I learned on guitar was Iron Man, and then quite a few more of theirs down the road. We played Hand of Doom and Snowblind in one of the last bands I was in too, which was always a highlight for me when we played shows. This end of their era with Iommi's rock solid resolve through his newly diagnosed cancer is really bitter sweet. Of course their age shows in their performances, and they do a bit of post editing but they're still fairly solid as far as the 3 remaining original members go. Pretty dam cool to see actually.
https://www.youtube.com/watch?v=GagS623mmQE