Well, Caligula is that is indeed John Hurt on narration duties, and not a Hurtalike doing the whole gravel-voiced 'ooh, I was in Aliens and I, Claudius and The Elephant Man, and most recently I turned up as a possibly evil [REDACTED]' thing. I hope so, I quite like the idea of John Merrick intoning out of my monitor. Hurt, or Hurtalike, is applying his…