the cheesy, campy, guilty pleasures that used to bubble up with some regularity out of the B-picture ooze of cut-rate genre entertainment. Those cherished bad movies—full of jerry-built effects, abominable acting, ludicrous story lines—once flickered with zesty crudity in drive-ins and grind houses across the land. B-picture genres—science fiction and comic-book fantasy in particular, but also kiddie cartoons and horror pictures—now dominate the A-list, commanding the largest budgets and the most attention from the market-research and quality-control departments of the companies that manufacture them... or the most part, the schlock of the past has evolved into star-driven, heavily publicized, expensive mediocrities...