text_a: like its two predecessors , 1983 's koyaanisqatsi and 1988 's powaqqatsi , the cinematic collage naqoyqatsi could be the most navel-gazing film ever .
text_b: though the controversial korean filmmaker 's latest effort is not for all tastes , it offers gorgeous imagery , effective performances , and an increasingly unsettling sense of foreboding .