Viola Davis heaps praises on late ‘Ma Rainey’ costar Chadwick Boseman Entertainment Tue, Apr 20, 2021 Acclaimed Hollywood A-lister Viola Davis is praising her late Ma Rainey's Black Bottom costar Chadwick Boseman's acting prowess in his final film. The How to Get Away with Murder actor, 55, looked back at the late Black Panther star’s final on-screen performance in the Oscar-nominated drama ahead of the Academy Awards. Giving an interview for CBS News’ 60 Minutes, The Help actor said: “First of all it's an extraordinary performance with an extraordinary role. I think it's the greatest role for a young African man ever. Only because it comes full circle."