Ma Rainey's Black Bottom (on Netflix from Dec 18) is a brilliant drama that takes place inside a Chicago recording studio on a hot summer afternoon in 1927. Based on the play of August Wilson (Fences), the film explores many topics (race, religion, money, music) but above all else, it’s a riveting tale of power. It’s easy to forget you’re looking at the likes of Viola Davis and Chadwick Boseman (in his final role) given the way they embody their respective characters. Grade: A.