There have been memorable exceptions over the years, like Requiem for a Dream , which made its immersive dive into drug culture a harrowingly hallucinatory horror movie; Drugstore Cowboy , both candid and contemplative in its depiction of transient junkies; Rachel Getting Married , which found an exquisite balance of Chekhovian comedy and drama in the fallout from the sister of the bride’s addiction issues; or the Safdie brothers’ Heaven Knows What , a grittily textured odyssey of druggy New York street life that paid homage to the 1971 classic, The Panic in Needle Park .