Sidney Lumet was nominated four times for Best Director but never won an Oscar. Take a look at the list below and tell me he didn't deserve the award.
My favorite Sidney Lumet films:
12 Angry MenSidney Lumet, '12 Angry Men' and 'Network' director, dies - delcotimes.com
Dog Day Afternoon
Before the Devil Knows You're Dead
The Anderson Tapes