East All-Star Terrence Ross of the Toronto Raptors competes in the slam dunk contest during the NBA basketball All-Star weekend in Houston, Texas, February 16, 2013.
Toronto Raptors guard Terrence Ross was crowned 2013 Sprite Slam Dunk champion .
Jean-Paul Pelissier / Reuters
Warner Bros. Pictures
It was three decades ago that pop star Prince became movie star Prince. With "Purple Rain" celebrating its 30th anniversary July 27, join us for a look at "The Purple One" other singing stars who are double threats.