'The Lord of the Rings: The Return of the King': The Largest Sweep

Alongside Ben-Hur (1959) and Titanic (1997), El señor de los anillos: El retorno del rey (2003) is the most Academy Award acclaimed movie in history with 11 wins. The other two movies had a few more nominations, though, whereas LOTR ROTK won all 11 categories for which it was nominated making it the largest Academy Award sweep. Which of the categories it won do you think was most deserving?

Discuss the list here!