Oh I liked this episode, it was psychologically scary and very well done.
I hate to say it but this episode had me more tense than Moffat's Vashta Nerada. The idea of this woman knowing what people are going to say, mimicking and then predicting is awful. Plus, the look on the Doctor's face when you can tell that he is scared - because honestly, there isn't a great deal that scares him.
Also, the zooming in on the woman's back before she turned round and revealed her face to be normal? I was really worried about what they would reveal it to be, this episode was very cleverly filmed to play on fears.
I think the episode also showed an interesting commentary on the people and how people react in a stressful situation like that, turning against someone quickly but easy to try and ingratiate themselves again if they are proven wrong.
Loved the Rose references obviously - I wasn't expecting the video thing again, it's definitely becoming interesting...
How difficult must it have been to do that whole long pi recitation?
I loved the whole exchange between Donna and the Doctor at the beginning - very married couple on a holiday - the husband goes off to do something exciting, the wife relaxes in the spa. I also loved their exchange at the end and the hug. I'm going to really miss Donna when she's gone, she's been a good fit for the Doctor.
I worry for the finale. This episode wasn't good to the Doctor, and the last few have all seemed to place a lot more stress and hardship on him. I think the finale will be tough on him somehow and it almost makes me not want to watch. But I will, because I am an addict.
*Finale spoiler potential below*
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If this thing has survived, could it now create itself in the form of the Doctor? Because if that were to happen, how would anyone tell them apart. And would this possibly present the solution to the riddle presented by the filming of certain locations in both suits?
Also, speculation for the finale is driving me mad having seen that trailer...