I just read this Salon article about Star Wars by sci-fi author David Brin from 1999. It is a brutal attack on Star Wars and George Lucas, and even though it is already almost a decade old, it is still very relevant in terms of popular culture today. The same arguments can be made against Golden Compass (the books as well as the movie), I Am Legend, Harry Potter, and countless other science fiction/fantasy movies (especially fantasy).
I have a big post in the works about the article, so stay tuned! Meanwhile, read the article - it's well worth the read.