text: Tracy and Matt, Michelle and Sebastian: these are the two couples whose lives of addiction, crime, and squalor are brilliantly captured in this raw and honest HBO documentary. They're in turns petulant, charming, repulsive, astonishingly stupid, and dedicated: to the drugs and to each other. They're also each very different: Matt is a working class boy who clearly revels in his naughtiness, whilst prep school dropout Tracy supports the couple with Western Union money from her moneybags father, who makes a surprisingly sympathetic cameo towards the end of the film. Meanwhile widow Michelle (whose hubby died of an OD) earns her daily bread by posing as an NYPD vice cop