Diane Keaton, the Oscar-winning star of 'Annie Hall,' 'The Godfather' films and 'Father of the Bride,' whose quirky, vibrant manner and depth made her one of the most singular actors of a generation, has died. She was 79. People Magazine reported Saturday that she died in California with loved ones, citing a family spokesperson. No other details were immediately available, and representatives for Keaton did not immediately respond to inquiries from The Associated Press.