Chadwick Boseman's family and coworkers delivered emotional tributes to the late actor during his Hollywood Walk of Fame ceremony. Black Panther director Ryan Coogler couldn't help but shed tears as he praised his colleague as "an incredibly humble teacher." "This is something that people who maybe played ice hockey with Wayne Gretzky can attest to, people who played basketball with Michael Jordan can attest to: there's something special about being that close to somebody that great," Coogler, 39, said in his speech via People on Thursday, November 20.