Party Monster (2003)
Party Monster is a 2003 American factually based drama directed by Fenton Bailey and Randy Barbato, and starring Macaulay Culkin as the drug-addled "king of the Club Kids". The film tells the story of the rise and fall of the infamous New York party promoter Michael Alig. This was Macaulay Culkin's first film in over nine years since his starring role in 1994's Richie Rich.
More at Wikipedia.