An easy one for me, Julius Erving(Dr. J.)! I was a kid and was fortunate to watch Dr. J. for whom played for New York Nets when they came to Freedom Hall in Louisville, Kentucky to play the great Kentucky Colonels, who were led by Dan Issel, Louie Dampier(Only 6' tall), and Artis Gilmore, Dr. J. did his free-throw line dunk, and I was blown away, and they were up by 15 at halftime, but Louie Dampier made many three-points in the second half and Gilmore and Issel came to life too, eventually won in a shootout! Kentucky Colonels won it all that year too, in 1975(ABA). Dr. J. really impressed me that night! Love him!