The Lord Of The Rings: The Return Of The King: According to IanSmith, in a recent seminar with Ian McKellan, who plays 'Gandalf' in all three films, just might have spoiled the much speculated death of Saruman in the third film.
WARNING: MAJOR PLOT SPOILERS AHEAD:
"Someone then said they enjoyed the fight scene with Saruman in the first film, and asked if we would see something similar in the third film, Return of the King. Sir Ian replied in the negative, saying that originally Saruman was to have died at the end of the second film but that this would now be the introduction to the third film. 'He falls from a great height and comes to a sticky end', he revealed, before going on to say 'Peter Jackson is a huge horror film fan. That's why he cast Christopher Lee - who better to play Saruman than the biggest horror villain? Knowing that and Peter's great love for horror movies, it's inconceivable that Dracula wouldn't play some part in Saruman's death."