Here's what Paul said about this subject:
Finally, brethren, whatsoever things are true, whatsoever things are honorable, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. (Philippians 4:8, ASV)
He didn't say, but implied, that things which are dishonorable, unjust, impure, unlovely and bad report are to be avoided.
I have not yet seen Revenge of the Sith. We may or may not see it. I did see episodes 1 and 2, and wished that I had spent my time and money in other ways--they were not well done. Episodes 4, 5, and 6 of Star Wars were, in my opinion, worth seeing, and I may see them again.
Clearly, there are some differences of opinion about the world view of the series. (See here and here for articles on the concept of world view--both written from a Christian world view!)
Marla Swoffer has lived near George Lucas, the creator of Star Wars, and has thoughts on him and his company based on that experience. Steven J. Rosen, apparently a Hindu himself, finds themes from Hindu literature in the Star Wars movies. Christianity Today Online just published a four part series which finds Christian themes there. (This is the fourth) Peter Chattaway and Jeffrey Overstreet, Christian film critics, speculate that the current crop of such were inspired by George Lucas. Here's one of (probably many) posts claiming that Lucas just wanted to raise questions about spirituality. Who is right?
I'm guessing that there are also Buddhist and Taoist themes in Star Wars. If there are, it wouldn't have surprised C. S. Lewis: