Long before there was reality TV, there was Frederick Wiseman, the documentary filmmaker whose approach was to descend upon a particular place, and group of people, and film – and film and film and film, until his subjects forgot he was there, and acted naturally. Then, after compiling absurd amounts of raw footage, Wiseman would edit, presenting the result without narration, so the story and themes build naturally. Wiseman has been making his special sort of films since the Sixties, so it’s proper that his latest subject is a true Sixties institution: the University of Berkeley in California. What’s it like now, and what are its students and employees up to? For the next four hours, culled from 250 hours of footage, At Berkeley will tell you. Check local listings.