* If "Star Wars" is the title of a movie: Yes, you should capitalize it.
* Example: "I watched the movie Star Wars last night."
* If "Star Wars" is used as a general term: No, you don't need to capitalize it.
* Example: "I'm a big fan of star wars movies."
In general, it's safer to capitalize "Star Wars" unless you are explicitly referring to the genre of space opera or science fiction movies.