In 1945, Barry Fitzgerald achieved something that is now impossible under Academy rules: he was nominated for both Best Actor and Best Supporting Actor for playing the exact same character (Father Fitzgibbon) in the same movie, 'Going My Way.' He ultimately won the Supporting Actor trophy. Following this confusing situation, the Academy changed its rules to prevent a single performance from being nominated in two different categories, ensuring that an actor can only be recognized in one acting slot per film.