I don't think I could pick 3 but my all-time favourite is Back To The Future.
Star Wars - A New Hope, Pirates of the Caribbean - Curse of the Black Pearl, The Avengers (1), Toy Story, Mean Girls, Hot Fuzz and if I were to also pick one out of the HP's it would be Prisoner of Azkaban.
Hot Fuzz is a popular one on here!
GREAT BIG BUSHY BEARD!