Lord Humongous, philosopher.
One common thread in three of the most popular movies of 2012 is an obsession with the question of whether the social contract is necessary, or worth it. The heroes in The Avengers battle a villain who represents the social contract on steroids. After rounding up a bunch of classical music fans on the street and forcing them to kneel before him, Loki unleashes the following academic lecture:
"It's the unspoken truth of humanity that you crave subjugation. The bright lure of freedom diminishes your life's joy in a mad scramble for power. For identity. You were made to be ruled. In the end, you will always kneel."
"All right, now ... well, the rest of my intentions are rather unclear."
In addition to being the speech that Barack Obama gives in the nightmares of the most paranoid, anti-government militia member, that's basically a really poorly worded argument for why we need the social contract. Left to their own devices, people don't know how to act. If you asked Hobbes to make the creepiest case for the social contract he possibly could, he would have written that speech.
The villain in The Dark Knight Rises, like the Joker before him, thinks that the social contract is a sham. Bane removes the people and institutions that enforce the social contract from the equation, and Gotham immediately descends into a citywide prison riot. This is a city that's mostly populated by people who went to school and held jobs and had access to reason for their entire lives, but without anything to enforce the contract, it's back to life in the scrum.