A Very American Movie "Star Wars" is like science fiction, but freed of the future. And yet it is America, all over: flaming, tumbling aircraft; huge enterprises collapsing before they're built; earnest, rich young princesses pretending to be democrats; a corrupt and inept Senate. As entertainment, it's full-speed sideways into a fun-house mirror, as Mr. Lucas's youthful aspiration is methodically replaced by an endless, brilliant, consumerized torrent of guns, gowns, clones and plastic figurines.