I enjoyed it.
I am going to forgive them for lifting an impossibly heavy object (tardis) with a helicopter in the opening scene, but it almost ruined my enjoyment of the show.
So they managed to forgo the time lock, Gallifrey is frozen.
Nice working in of the next doctor's face (eyes) in a single scene.
Sets up the 'death' of the doctor nicely, but I'll have to review the history of what know of that T planet before the Christmas episode.
I reiterate from much earlier in this thread that Jenna Louise Coleman would be amazing in porn, those eyes have it, lets gets some more Confessions of a callgirl (Billie Piper) and add JLC alongside Belle.
Unfortunately she's not as good as she looks in Dr Who... Have a look for "Room At The Top", was on BBC4 a while ago.
Awesome episode (Dr Who) though. Especially the bit where the latest doctor discusses what he did for the last 400 years, shows how dark he is inside with his happy veneer just trying to cover it all up.