As his title suggests, Jonathan Rosenbaum tackles two subjects in his latest collection of essays, neither of them easy to define. In an era when films are mostly viewed at home, not on the big screen, cinema can no longer mean what it once did. Cinephilia, too, is an alluring but indefinite concept – love of movies, yes, but not any old love, and probably not the devotion felt by your average fan of Transformers or Twilight.