It's the 1970s. A metal cart creaks into a classroom. Students tuck books into desks. The teacher struggles to thread a 16-mm film through sprockets in a projector, and then asks someone to turn off ...

Regular scanners of the repertory movie listings have likely encountered it: an ad for a free screening of an Ingmar Bergman drama, say, or a little-known silent movie, hosted by, of all places, the ...