Watch Sadisflix. For years, STAR WARS fan have squared off against STAR TREK fans over which space fantasy is the better choice. As a result, both franchises have been embroiled in a continuing battle for merchandise sales, publicity and box-office receipts. The science-fiction genre has never seen anything like it and, as these fictional universes continue to expand, the competition seems to be never ending. Star Wars vs. Star Trek: The Rivalry Continues compares the space opera worlds of George Lucas and Gene Roddenberry for a one-of-a-kind intergalactic documentary.