From Jaume Balagueró, director of [REC] and [REC] 2, comes one of the best and most suspenseful films I’ve seen in at least a decade. It’s a taut, complex and magnificently dark thriller that doesn’t let up until the credits roll. Sleep Tight (or Mientras Duermes) follows a tortured soul named Caesar (Luis Tosar) who by some weird personal quirk is unable to be happy. Nothing will brighten his sour mood…except seeing others more upset, displeased or depressed than him. Yet before you think this sounds like some hokey story or an odd iteration of How the Grinch Stole Christmas, this really is something special. The visuals are wonderfully intricate for such simple surroundings and the…