Slate | Star Wars: Episodes I-VI - The greatest postmodern art film ever
Did Lucas intentionally design his films that way? I don't think so, and even if he did it would be better to call it a deconstructionist film. After all, it's hard to call a story with a metanarrative, moral categories of light and dark, and the para-religious "force," "postmodern."
Nevertheless, the article is a good read for any Star Wars fan, of which I am one. And it gives you a way to 'explain' why the last three movies were so terrible and still cling to your aesthetic dignity.