"You just gotta see that junk is just another nine-to-five gig in the end," wrote Jim Carroll in "The Basketball Diaries" way back in 1978. Perhaps no film about heroin has captured that grinding routine of score-shoot-nod-hustle-score as well as "Heaven Knows What" — and it's easy to see why. The film's lead actress, Arielle Holmes, was herself a 19-year-old junkie living rough on the streets of New York City.