If pride goeth before a fall, look for 'N Sync to be arriving soon in a ravine near you. The boys open their third album with Pop and Celebrity, Michael Jackson-style salvos against, respectively, the critics who await their demise and the hangers-on who like them only for their fame. But even when ranting, 'N Sync wields its pop hooks like weapons; they nail every chorus, emote feverishly on the ballads and hedge their bets on the whole pop thing by bouncing between techno, two-step, hip-hop and any other style Billboard might one day have a chart for. Slick and stupid? Sure. But it will make you dance. 'N Sync is probably all right with that.