I was reading this article in Yahoo UK talking about the "political messages" in the latest and final episode of Star Wars.
I found it interesting that some people read into Anakin Skywalker's warning to Obi-Wan Kenobi "If you're not with me, you're my enemy". The article mentions that it reminded many of Bush's post-September 11 declaration: "Either you are with us, or you are with the terrorists."
However, it was not the first time such a phrase was used in movies. In the epic MGM Technicolor blockbuster Ben-Hur: A Tale of the Christ (1959) Roman Tribune Messala (Stephen Boyd) offers Juda Ben-Hur (Charlton Heston)and ultimatum: either Ben Hur was with him in eliminating the Jewish rebellion or against him.
See the movie (if you have not) for the rest of the story.