Koyaanisqatsi: Life Out Of Balance (1983 Film)
The striking time-lapse imagery of Godfrey Reggio'sKoyaanisquatsiwas really an accompaniment to Philip Glass's music,  rather than the other way around.  Think of it this way:  You can listen to the  music without the film, but you'd never watch the film without the music.  OK,  maybe you didn't leave the theater humming the tunes (although I do remember  going around chanting that thrillingly deep-throated "Koyaanisqatsi"  for a while); this is some of Glass's most dramatic and powerful music-- essential for anybody interested in modern film music, or just modern music in  general.--Jim Emerson