First time to say it with words Rivers:
"Spoilers!"
The Monster of the Week unfortunately is slightly below in the main story. But it is a very nice medium to 10 and 11 together and provides some laughs!
But again as 10 to see David and then also along with Matt Smith is simply gorgeous! A Bromance as they could not be better (even if it is always the Doctor's). The chemistry between the two actors is just right and with John Hurt, it can not be better.
Steven Moffat has created "The Day of the Doctor" a great special that auswartet with drama, heart, tension and humor, is never boring, and answers many questions. The flashbacks to Gallifrey clarify something and finally you get to the War Doctor know and maybe something to accomplish why 9 was as it was.
After the Special I can not wait for the start of season 8 and hope to get an answer to perhaps the most important question in the film:
Who Knows?