"Tina" is that rare documentary that leaves you craving an encore, as if two hours weren’t quite enough to do Tina Turner’s life and career justice. Weaving in a new interview with the <a href="https://www.cnn.com/2019/11/26/entertainment/tina-turner-80" target="_blank">81-year-old icon</a>, the footage then and now underlines the impression of Turner as a