"The best way to explain the difference between Blink and these two episodes would be to say that I think the best conceived movie sequel ever was Aliens following Alien. It took the same monster into an entirely different type of film." I love Steven Moffat very much.

"In general, we noticed the Doctor is more likely to overthrow the government on alien planets, or in the distant future. When he visits present-day Earth or our history, he's an arch-conservative."