I thought I could hear the voices of the third and fifth Doctor during the scene where the salvage crew member was opening up the console. Did anyone else notice this?
I heard several Doctor's including the Fourth saying "not even the hordes of Genghis Kahn could get thru those doors".
I rated it Good, mainly for it being a reset episode. I thought it would have been cool for Clara to know the Doctor's secrets. By the way, who wrote the Great Time War book, and is it referring to the Time War that caused the Time Lords to go away or another Time War? I'm figuring it wasn't the Doctor who wrote it since he wouldn't mention his own name.