Empire Strikes Back. No movie have come close to that cliffhanger. Vader is Luke' father, Luke badly injured and Solo carbonized. I'll always remember the last scene of Empire Strikes Back, where Luke and Leia looking out the window and promising themselves that they will save Solo. This is a classic. Probably most of you guys are too young to remember or were not even born when this movie came out so you do not know the impact of the ending of Empire Strikes Back. EVERY blockbuster movies made after Empire tried to copy the cliffhanger ending of this movie.