"And so it came to pass, on Christmas Day, that the Human Race did cease to exist. But even then, the Master had no concept of his greater role in events, for this was far more than humanity's end! This day was the day upon which the whole of creation would change forever! This was the day the Time Lords returned - for Gallifrey; for victory; for the End of Time itself!"
I really hope that on new year's day I will finally find out what the hell happened in the great time war. But this was the best moment of the episode.