After the unimaginative Vampires of Venice, they hit back big time with Amy's Choice, a rather surreal story. Slightly of the 'Turn left' ilk, a kind of what if story, rather then an actual adventure.
In brief, Amy and Rory are living seemingly in domestic bliss, married, house, a baby on the way, but by the tweeting of birds they escape to a different reality, all on board the TARDIS in a more realistic reality. In the first reality they are attacked by old people, and in the second the TARDIS is hurtling towards an Icy demise, as the TARDIS hurtles towards a Cold star. The miscreant of their foes is The Dreamlord, a powerful malicious individual who knows all about the Doctor and co, The Doctor has an idea who he is. The Dreamlord gives them the chance to live by deciding which is reality and which is the dream.
I really liked this episode, I loved the utter originality of it. The concept was a clever one, one reality seemingly more obscure then the other. Some nice touches of humour. I love the Dreamlord character and his manipulation of Amy and treatment of the Doctor.
Toby Jones is very good at doing the villainous roles, he can make you despise him. He puts in a very good performance.
It could have been a classic, not quite, but it is still a very good episode.