Really enjoyed it and it met the high expectations as always. My brother warned me you needed to remember a lot about Matt Smith's episodes so I read up on Friday night to give myself a good recap before watching it on Saturday night so all the stuff about the silence and the question were fresh in my mind.
Didn't expect the Doctor to be dying of old age but I guess it made sense having used up all his regenerations. It raised a few questions to get you looking forward to the next series. Was it a new cycle of regenerations so he now has another 12? Is Capaldi now 12 (or 14 of course) or is he sort of reset back to 1? Asking how to fly the Tardis made me wonder if he was reset and doesn't hold the Doctor's memories anymore, or maybe he was just disorientated after the regeneration. Did the Time Lords and Gallifrey break through or were they just able to enter briefly to pass on the regenerations? Also seems they are not as "frozen" as the Day of the Doctor suggested they would be.
Surprised me how fast the regeneration was compared to previous ones. Also couldn't help having some tears, especially when the bow tie fell to the ground and Amy appeared. Going to miss Smith. Still think Tennant is my number 1, but it's extremely close.
The how to fly the TARDIS question was certainly disorientation. I think he's still 12 but its the start of a new cycle. I didn't appreciate Smith until later on in his tenure and now I kind of miss him but I'm giddy for Capaldi, and as filming started today some exciting sets for episodes has been revealed (Victorian and WWI). It will be interesting to see what the Time Lords do over the next series as the crack wasn't fully dealt with. I loved the regeneration, particularly on the clock tower, even though it was a bit quick. Over all though a good episode.