I really was a fan of LOST for 5 years, but the final season was disappointing. Before two or three years, it was in my top-5 but now it hardly makes my top-20.
They are too many but here is my top-10. Scarface Godfather (I, II, III) Rambo (I, II, III, IV) The Dark Knight Highlander Rocky (I, II, III, IV, V, VI) Shawshank Redemption Star Wars (I, II, III, IV, V, VI) Sixth Sense Donnie Darko