The oldest Sega Commercials Youtube can offer

You probably already knew this, but the infamous 'SEGA!' voice wasn't first used at the start of Sonic 1, but in fact many years earlier in commercials on Japanese TV as far back as 1983! Hunting around Youtube you can find plenty of just-about watchable recording of some of these relics of Sega advertising, starting with this collection of ads selling Sega's first ever console the SG-1000. Oh, and you may want to watch this with your fingers in your ears at the start, as they may hurt otherwise.