The Pyramid at the End of the World - S10-E8
Trivia: UNIT, and its director Kate Lethbridge-Stewart, was originally going to appear in this episode, but actor scheduling conflicts prevented this - hence the Secretary-General of the UN and the three military officers.
Trivia: The portrait of Queen Victoria visible in the soldiers' camp is not a portrait of the real Queen, but of her as portrayed by Pauline Collins in the Tenth Doctor episode "Tooth and Claw."
Continuity mistake: Before Martha uses Project Indigo, she doesn't have an ear piece. Then, after two quick shots of Daleks, when Martha says, "Bye, Jack," she does (and then takes it out). (00:17:56)
The Day of the Doctor - S7-E16
Clara: Doctor, what's going on?
Eleventh Doctor: It's a... Uh... Timey wimey... Thing.
The Doctor: "Timey" what? "Timey wimey"?
Tenth Doctor: I... I have no idea where he picks that stuff up.
Last of the Time Lords (3) - S3-E13
Question: Why does The Master fear The Doctor forgiving him? What's he forgiving The Master for exactly?
Chosen answer: The Master knows that deep down, he deserves death for the crimes that he's committed throughout his life, and since he regards The Doctor as his arch-foe, he expects it to be at his hands. The fact that The Doctor is still willing to forgive him after everything the Master's put him through hurts him more deeply than death would.
Captain Defenestrator