What is Woody Allen's 1977 break-through film called which won an Oscar for best film?

Explanation

'Annie Hall' became Woody Allen's major break-through film which won an Oscar for best film in 1977. It is one of many to star both Woody Allen and Diane Keaton. Those two have played together in 'Love & Death', 'Manhattan' and 'Play it Again, Sam', amongst others. All are directed by Woody Allen. Like the majority of his films, 'Annie Hall' takes place in New York, Allen's hometown.