Alfred Hitchcock
I am completely astounded at the fact that perhaps the greatest director of all time never managed to win an Oscar. The mastermind behind films such as Vertigo and The Birds is considered to be the most influential directors of all time, and he is certainly one of the most famous. His voyeuristic style of film-making was considered controversial but it was nevertheless astounding and has made him one of the most influential directors in Hollywood. He received five nominations for Best Director for his work on Rebecca, Lifeboat, Spellbound, Rear Window, and Psycho. To this day, I will never know why Hitchcock was never awarded Oscar gold by the Academy.