I first watched Party Monster a couple of years ago, when once-infamous club promoter Michael Alig was released from prison, where he served 17 years for brutally murdering his drug dealer. The 2003 biopic, based on James St James’ memoir, “Disco Bloodbath”, flew under the radar during its initial release. But the film’s subject, “Club Kids” of ’90s Manhattan, once commanded TV screens across the country.