The twins in The Social Network were played by one actor.

That's right - 24-year-old Armie Hammer played both Cameron and Tyler Winklevoss! Though many applauded his performance, twice the normal amount of acting was not enough to earn him a nomination for Best Supporting Actor last night at the Academy Awards. The Social Network did end up winning three Oscars - for adapted screenplay, editing, and best score. (Read more about The Social Network\'s awards.