Return Of The Jedi
When it comes to the Star Wars films, the prequels were unnecessary, the back-story to Anakin wasn't important enough to be told on film. Anything after Episode VI should have adapted the books and comics into films, but only if George Lucas and someone like Irvin Kershner were in charge. But because of what Disney has done to the Star Wars universe, for me, the Star Wars films started with A New Hope and ended with Return of the Jedi. Until I write a full review for the film, this link will have to do.