It is a truth universally acknowledged that TV has surpassed the movies as the medium of choice for the discerning viewer. Since the evolutionary leap that was “The Sopranos,” episodic television—the grown-up kind, that is; the kind that’s not TV, but HBO (or Showtime, or AMC, etc.)—has raised its game with complex plots, high-quality production, morally ambiguous protagonists, and eager forays into R-rated territory. So, this weekend, the sixth-season premiere of “Mad Men” will suck up all the cultural oxygen. A couple million viewers will tune in, and tens of thousands of words will be written obsessing over every detail of Don Draper’s continuing journey from icon to relic. Director Shane Carruth’s new film, Upstream Color, meanwhile, will open in one theater in New York, kicking off a brief art-house rollout that, if he’s lucky, will win over a modest, devoted following.