Fox, Saturdays at 11 p.m.
Like The Office, of all shows, Fringe heads into a final season where nobody can even guess what the hell is going on. It's superb news that the astoundingly inventive Fringe is getting a fifth season to bring the story to a close. And it's a sure bet to be awesome, because Fringe has never screwed up before; every step of the way, through all the drugs and time travel, the writers have kept faith with the viewers without cheating or cutting narrative corners. Last season ended with a badass flash-forward to 2036, with Walter Bishop and the Fringe heroes plotting to outsmart the Observers who have taken over the planet. Despite all the complex lysergic narratives dangling in the air, this should be a hell of an endgame.