By Christoph Huber Long mainstream-despised as a videogame hack—although his case has been adopted by a handful of highbrow critics—Brit-born Paul W.S. is the elder, least pretentious, and most consistently amusing Anderson of the current director trifecta: its termite artisan. With the homegrown Newcastle juvenile-delinquent story Shopping (1994), he delivered a stylish calling card and…