It’s only two scenes, but it’s perfect. You couldn’t ask for a more perfect slice of Doctor Who. When I first watched this, in November 2013, I had to keep pausing it to run around the house in excitement, before going back to the beginning, getting slightly further into the episode, then doing the same thing again.

I have such uncomplicated feelings towards this marvellous performance from a Doctor who has had far too little screen time. This was his defining moment, many year’s after his character’s conception. This is what we think about first, when we think about the Eighth Doctor.