Synergy's famous DBA Magazine intro helped to create one of those moments in time when everything changed. I've probably watched it several hundred times over the years and it never gets dull. It's magnificent with beautiful visuals and groundbreaking SIDtastic audio by Joris Maarten de Man. One of my favourite intros ever made.
This jaw-dropping experience can be yours by downloading from Demozoo but... come on, use a real Atari ST!