Don Cheadle directs, stars in Miles Davis biopic

Perhaps Don Cheadle never knew he was so cool. But when Miles Davis’ nephew, Vince Wilburn Jr., decreed that only Mr. Cheadle could play the jazz great in a film, Mr. Cheadle sat up and took notice. “When Miles was being inducted into the Rock and Roll Hall of Fame in 2006, [Mr. Wilburn] said, ‘This…