Werner Herzog contemplates the Internet. What more do you need to know about "Lo and Behold: Reveries of the Connected World"? The promises and pitfalls of the digital age is the perfect subject for Herzog, a rare filmmaker who's a bigger personality than most of the people he makes films about—and considering the sorts of eccentrics, dreamers and madmen Herzog makes films about, that's saying a lot. If your work entails programming or anything related to the nuts and bolts of digital technology, you're unlikely to encounter anything in this brisk feature that you haven't contemplated at length; but if you spend a good portion of your waking life online, as increasing numbers of viewers do, but take it for granted, you may appreciate the way Herzog comes into the the subject: from a borderline-layman's perspective, wry and curious. He's equally interested in the subjects being discussed and the personalities of the experts laying it all out.