Okay so I totally think that Peter Capaldi looks like an older Arthur Darvill which works really well, because Rory the Roman and then he plays a Roman in this episode! It just works so well. Even though it's not actually a thing.
Freaking scary episode, but a great Doctor-Rose moment, even though she wasn't actually there. Totally had the same reaction except I fell off my couch, hehehe, got a little exited…. <---THIS comment exactly.