He was a first rate director (Serpico, Dog Day Afternoon, The Verdict) who kept on producing interesting films up to the end. I mean to make a film as daring and bold as Before the Devil Knows Your're Dead at the age of 83 is indeed something. One great thing about Lumet was, like Jules Dasin, he never wavered from his core leftist humanist concerns. He did not waffle in the passing wind. RIP, Sidney Lumet.