[updated 5.01.2011]
BP=Best Picture winner if not the leader, which has happened 12 times.
32 times the leader has failed to win 5 total, including this year.
Most Wins
11: Return of the King (Peter Jackson) won 11/11 nominations
11: Titanic (James Cameron)
11: Ben-Hur (William Wyler) [photo above]
10: West Side Story
9: Gigi, The English Patient, and The Last Emperor
8: Slumdog