Koyaanisqatsi is arguably the best stoner movie of all time, although Godfrey Reggio probably didn't realise that in '83. Aerial photography of forests, animals; etc, sweeps across to expansive time-lapse shots of factory complexes and nuclear power plants. The big country's poeticised and exposed to Philip Glass' insistent score. Powaqqatsi, the '88 sequel, explored Third World exploitation, but the original's the must-see.