Loved it! The opening montage was fantastic. Obviously the quality of the footage posed its problems, but they dealt with it well and anyway, ropey old footage places it nicely in a historical landscape.
Clara's true nature seemed to make perfect sense and was well explained.
The ending was amazing. I'd completely forgotten John Hurt was involved in Who, so that came as a total surprise. When I heard his voice I couldn't place it for a sec and actually wondered if it was Sean Pertwee, which would've made its own bit of sense.
So, does anyone have any guesses where he comes from? I mean, I got the impression he was post-11, simply because I assume he's the last doctor, who turned from healer to warrior in the battle at Trenzalore?