I'm currently smack-dab in the middle of Jon Wiederhorn's sprawling oral history, "Louder Than Hell." I actually worked with Jon back during my fleeting tenure at MTV News Online, and he's a stand-up guy. Beyond that, the book is truly worth seeking out, even if you're only a passive fan of all things metal. Go fetch.
Being that I'm currently in the "crossover" portion (i.e. documenting the fertile cross-pollination between the thrash metal and hardcore scenes circa 1986), I thought it'd be fitting to exhume these clips below from a fabled show at the Ritz featuring VoiVod, the Cro-Mags and Venom. I actually still have a pristine copy of the original flyer (above). A document of a vanished age.
The video quality is patchy and the content is often frankly ridiculous, but prepare thyself for the mosh and enjoy.