Possible Clues:

• ''Dog Day Afternoon'' director
• ''Network'' director Sidney
• 'Network' director, 1976
• Sidney --, US film director
• Sidney - - , film director
• "Dog Day Afternoon" director
• ''The Pawnbroker'' director
• ''The Verdict'' director
• 'Before the Devil Knows You're Dead' director Sidney
• "12 Angry Men" director Sidney