I think that there will probably be a lot of people who write this one off as boring but I loved it. The alien of the week storyline really didn't matter a jot, it was just there as a framing device for a wonderful character piece with some absolutely top notch acting. I've been loving Matt Smith from the get go but this is the first time I've enjoyed Karen Gillan's performance so much. And as others have said Curran was wonderful.
Did Curtis pile it on a little thick there at the end? Absolutely! But if you didn't feel the slightest little wibble of your bottom lip during that scene you have a heart of stone.