Director D.A. Pennebaker’s filmic record of David Bowie’s brain-frying final concert as his Ziggy Stardust incarnation in July 1973 is key evidence why Bowie was suddenly catapulted to slavish cult adoration. A bridge between cult fetish and massive popular appeal right before the record industry (and the Thin White Duke himself) homogenized the pop star’s image into something less threatening.