He was the tap dancer who comedically chased bad acts off the stage at the Apollo. Taught dancing and footwork to Gregory Hines, Ben Vereen, Sugar Ray Robinson and Muhammad Ali. He was 86. http://www.nytimes.com/2003/05/30/obituaries/30SIMS.html?ex=1054958400&en=e583a0bf819c8240&ei=5062&partner=GOOGLE
One of the greats. I stopped and said a quick prayer when I heard.