The dirty old man hanging out with all those oversexed Paris teenagers in "The Smell of Us" is none other than the voyeuristic pic’s director, Larry Clark. Usually, he’s the one behind the camera, but in what amounts to a French "Kids," Clark can be seen passed out in the opening scene, spilled across the steps of the Palais de Tokyo as skaters swarm around him. Nearly 20 years have passed since Clark’s debut stunned the world — and 30 more since the first photos in his provocative "Tulsa" book were taken – yet his focus remains, as the song says, forever young. Somehow, the fact that these...