I think Star Wars changed the culture. It changed what we expected from movies, put classical music on the charts, emphasized the good vs. evil empire we were experiencing at the time.
Heck, remember Reagan's "star wars" project that is partially credited for ending the Cold War? And look at what it did for computer animation, which affects practically everything nowadays. It was a watershed film.
Star Wars is probably one of the most influential films ever made.
I think Star Trek was the church of the 1960s rads and was far more influential than Star Wars in terms of shaping a world view. Star Trek was about the only theology the '60s Left was ever taught.