12 Angry Men? Network? Dog Day Afternoon? Serpico? The Verdict? Prince of the City? Fail Safe? Before The Devil Knows You're Dead? Other?
Fucking Lumet. Too many good movies. In addition to that list ( all starring Connery): The Hill (1966) The Offence (1972) Murder On The Orient Express (1974) The Offence, in particular, is very disturbing for its subject matter and the period it was set in.