Danny Boyle is quite the visceral director which lends itself well to this scene. Here Renton (Ewan McGregor) fishes around a shit infested public toilet (the “worst toilet in Scotland”) for his mislaid opium suppositories. The uncomfortable wonder of Renton swiming serenely through toilet water is perfectly realised and delicately balances the awkward dichotomy of the euphoria of drugs and its associated squalor. Boyle does such magical job of recreating filth and beauty at the same time. He did it again in Slumdog Millionaire which I’m sure was motivated (at least visually) by this scene. Trainspotting is such a brilliant film … I’ll let the scene do the talking.