Fridge / Doctor Who S31 E13 "The Big Bang"

• Fridge Brilliance: River Song coming to Amy's and Rory's wedding to drop off her diary and trigger Amy's memory of the Doctor goes unexplained in the episode proper, though it does suggest she somehow still remembered the Doctor even after he was Ret Goned. In Series 6, The Reveal that River is part Time Lady likely means she has some resistance to changes in the timeline affecting history, such as the Doctor having once existed. And besides, even if the Doctor weren't in need of rescue, she likely would've turned up anyway - why wouldn't she, to see her parents-slash-best friends finally tie the knot?

• Fridge Brilliance: The Pandorica, this oh-so-impregnable prison, was quite amenable to being opened by judicious use of a sonic screwdriver. Yes, prisons are generally designed to be hard to break out of, rather than in. But then you consider the Pandorica's purpose and how it was supposed to know the Doctor had arrived. Well, what does the Doctor usually start doing when he finds an interesting piece of kit?