Star Wars as eclectic genre-bender isn't a knock-off. What other film made such a collage of western, samurai, screwball comedy, bible epic, Wizard of Oz, Metropolis, Laurel and Hardy, WWII, space opera, Tolkien, pirate movies, knights of the Round Table, Bogart movies, Hans Christian Anderson etc.? As cinema, this unprecedented genre-blurring is the film's most interesting and original achievement, and is so often overlooked these days.