Anyone else notice the Doctor running around previous episodes?
Big theory: The Doctor is going back into the episodes that already happened to fix everything.
Two big examples: A) The 11th hour when young Amy is waiting for the Doctor and the camera shows her from the kitchen window, a shadowed figure runs by in front of the camera. First thing you think is it is prisoner 0, but the form is clearly human and later in the episode the Doctor explains it takes months to make the link to change shape ergo 0 could not be human. Being the nerdy girl I am, I looked at that scene over and over, and it looks like the Doctor. Check it out.
B) In Flesh and Stone, the angels grab the Doctor's jacket and he escapes by leaving it in their grasp. This jacket is a very brown jacket with elbow patches. Later when the he is telling amy to stay he runs off and presumably returns moments later. Here's what wrong with it. First, Amy asks why the crack is here and he's working on it, despite the fact that at that point, the crack was not an important factor. Second, he tells Amy to try hard and remember what he told her when she was 7, which at the time really didn't have anything to do with what was going on, but could just be inspirational. However, looking at the events with Rory in Cold Blood, he says she has to remember Rory in the same manner. Finally, he's wearing a jacket in that scene, AND a different watch. Now, people think this is a production goof, but besides that being a MAJOR over sight in production, here's the kicker: It's the same colored jacket he begins wearing after that point, which is an off olive green as opposed to a dirt brown. My friend and I just went over this and were shocked and excited. We have a feeling he may loose his goldband watch soon, because he still had it in the newest one with Van Gogh, which would pretty much prove this theory right.
Go back and take a look if you can, cause it's pretty amazing, which makes me thing Moffat is some kind of mastermind with time travel =P