Keanu Reeves came to Summer TV Press Tour Q&A session with to talk — sometimes in French — about the workflow of digital versus the workflow of photochemical film. Yes, it was mind-mumbing but, in fairness, it is the subject of the documentary he’s here to plug, Side By Side. Yes, it was released as a feature film about a year ago. But PBS is airing it on Aug. 30. More accurately, PBS is airing parts of it – cut it down a bunch.