The 1977 Woody Allen film that won the Academy Award for Best Picture is Annie Hall.
The film stars Allen as Alvy Singer, a New York comedian looking back on his complicated relationship with Annie Hall, played by Diane Keaton. Its blend of romance, comedy, direct address, animation, subtitles, and non-linear storytelling marked a more serious and experimental turn in Allen's career.
At the 50th Academy Awards in 1978, Annie Hall won four Oscars: Best Picture, Best Director for Woody Allen, Best Actress for Diane Keaton, and Best Original Screenplay for Allen and Marshall Brickman. It was also nominated for the other major acting category, completing the so-called Big Five nominations.
A common mix-up is confusing the film's Best Picture victory with Allen's later movies, such as Manhattan. Annie Hall was also the first Woody Allen film to win Best Picture, and producer Charles H. Joffe accepted the award.