In between his personal and eye-popping films Pi and The Fountain, Darren Aronofsky found critical and commercial success with Requiem for a Dream, interweaving the downward spirals of four drug addicts. Three of them (Jared Leto, Jennifer Connelly and Marlon Wayans) are junkies who deal drugs at Coney Island. The fourth (Oscar-nominated Ellen Burstyn) is a middle-aged housewife hooked on prescription meds. All dream of a better life through mind-altering substances while reality gets grimmer. Aronofsky’s hallucinatory, music-video approach elevates what’s basically a Reefer Madness warning based on Hubert Selby Jr.’s cult novel from 1978. The McNay screens the 2000 film in conjunction with its Get Reel series and the traveling exhibition “Coney Island: Visions of an American Dreamland, 1861-2008.”