My boy went through that same phase two years ago. We even vacationed in Disney World where they had a Star Wars themed show. They brought the kids on stage for "jedi training" and to fight Darth Vader.

I saw them as a kid when they were released and then got back into them with my son's interest. I didn't see the films that were released in the early 2000s until my son watched them. I thought that the third one, Revenge of the Sith, was as good as the original three released between 1977-80.