Thinking about it, I saw it first with the great John McCoy, here at 1:31 and in the second vid at 1:42, whose ostinate root note in eighths pick-playing (and continuous dampening with his fretting hand) was an even bigger influence on me than Herr Sarzo's fretboard magic.
Sarzo had better chest hair though. Say what you will about Quiet Riot, but in the '83 RockPop show in Dortmund
that introduced theses rabble rousers to Germany, they kicked the proverbial butt and were on fire, with DuBrow's screamy vocals soaring, they were easily the most dynamic of all bands that evening/night though they were by no means the headliner among all the heavy metal royalty there. That event is generally seen today as setting off the heavy metal craze in Germany and it was followed by the first time appearance of magazines such a Metal Hammer dedicated to heavy music only soon after.
Herr Sarzo in full Playgirl centerfold splendor at 3:29.