Besides having the improbably beautiful Keira Knightly as math geek, I liked how they interwove the three time periods of Alan Turing's life: as a bullied boy; as the centre of British efforts to crack the German code; and as a civilian persecuted for being homosexual. I knew a bit about those things before, but didn't know he had Asperger's, which is apparently a controversial interpretation of his sometimes difficult behaviour. If he did, perhaps the Turing test was not really about testing the ability of computers to simulate humans, but a test for humans to perceive "normal" social cues.