Happy Birthday To Dimebag Darrell August 20, 1966. - Dimebag Darrell wasn’t just a phenomenal musician: he was a revolutionary. Like most of the greatest guitarists in rock history, he played as if the guitar was some magical vestigial limb, as the very essence of his being poured out of him as a bewildering array of ageless riffs and spinetingling lead breaks. He exerted immeasurable power and influence over the entire metal scene during his career, marching gleefully into uncharted territory t