I’ve talked about everything else in The Day of the Doctor, let’s talk about the Doctor and his multiple regenerations.
The first time he meets another regeneration is when Eleven jumps into the time fissure and runs into Ten. That scene was brilliant! Sizing each other up was hilarious. Seeing how skinny Ten was from “the outside” was a nice touch. I love how they start off a little…judgemental, but then the glasses come out (“Oh! Lovely!”) and some common ground is found and it just gets better from there.
Although I do have to wonder if Kate was taken aback when she heard Ten’s voice because she recognized it, from video of course, or because it was another regeneration.
Anyway, they continue to be two regenerations who had not met yet (“How can you forget this?”) and make a great reference back to their shared history by reversing the polarity. Squee!
“We’re both reversing the polarity.”
“Yes, I know that!”
“There’s two of us. I’m reversing it. You’re reversing it back again. We’re confusing the polarity!”