Well, absolutely amazing
John Hurt was brilliant, shows what a fantastic actor he is.
Was very happy to see all the Doctors together to save their planet, and the sneak preview of the 13th Doctor was enough to get you interested for next year!
The references throughout the story were very good, the 4th Doctors scarf, the Schools governor was Ian Chesterton (the first companion), using each other's words from earlier stories, and plenty of others. Tom Baker looked like he enjoyed himself.
The opening credits was a brilliant idea using the original versionHope the Christmas special is as good.