One of the great Sidney Lumet's thoroughly hypnotic New York movies, where you can smell the sweat of the tension and the barely-repressed panic in the streets. An Oscar-nominated Al Pacino is in hell-for-leather form. Made in '73 and based on Peter Maas' book of the trials faced by real-life cop Frank Serpico, who ended an 11-year career by blowing the whistle on his colleagues, it follows Pacino as the committed crusader exposing corruption in the force. He's abused, ostracised, and ultimately has to flee the country.
This'll be the one Denzel didn't win the Oscar for. His factory-worker Everyman holds up a hospital when the nasty insurance company won't help his dying son. Shades of Dog Day Afternoon, but an astounding cast (Robert Duvall, James Woods, Ray Liotta) can't stop director Nick (son of John) Cassavetes from descending into trite, teary sentimentality.