The Imitation Game was excellent; I've seen it twice. If it weren't for Eddie Redmayne in The Theory of Everything literally acting out motor-neuron discease, Cumberpatch would've been an Oscar favorite, if not runaway.
In a nutshell, socially awkward/scarred genius helps break Nazi encription code and win WW2. Based on a true story and only coming out recently because: 1) England kept the discovery under wraps so they had an advantage in any future war 2) Turing (the main characcter) committed suicide because he was illegally homosexual and couldn't stand the hormone treatments.