A man discovers a vast network of empty rooms and hallways, in a film about the dangers of the unconscious.  I just watched a weird and genuinely creepy film, currently getting a lot of attention, called Backrooms. One of the unusual aspects of this movie is that the plot, such at is, is secondary to the visual and auditory experience. A disorienting opening sequence takes the fuzzy point of view of a video camera being used by an unnamed traveler in a series of nondescript, mostly empty rooms. Why this traveler is there we don’t know, but he wants out,…