Star Wars
Think science fiction movies, think Star Wars. From the almighty George Lucas, Star Wars has been one awsome battle since 1977 (ok so there was a 15 year or so gap) and it's still going.

Back yonder where the days of Luke, Hans and Leia. Of course now its all Anakin and a much younger Obi-Wan. Despite this the old movies are the new cronologically and the new movies are the old cronologically.