If it's crap ... We'll tell you
I actually new it right when robot amy talked about the Silence and the question in Lets kill Hitler. Couse i kept making DC Question jokes when she said that. But i was actually was wondering how the doctor was going to cheat death.
[MIGHT CONTAIN SPOILERS]
I'm sorry, but after seeing Steven Moffat turn around what appeared to be dud story lines for the last two years and making them mindblowingly entertaining I have to say that I'm really excited by the question. And the question isn't a referance to who he IS but what he's called, which has been a mystery since the show premiered in '63.
I'm not a a fan of Dr. Who but I caught a few episodes towards the end and I thought they were rather entertaining, especially the finale.
I may just have to watch more Dr. Who.