He's found an almost perfect subject: the creation of the networking website Facebook, and the backstabbing legal row among the various nerds, geeks, Brainiac and maniacs about who gets the credit and the cash. Part boardroom drama, part conspiracy thriller, the story is adapted from Ben Mezrich's non-fiction The Accidental Billionaires. There appears, however, to be nothing accidental about it. The film version perfectly displays Sorkin's gift for creating instantly believable sympathetic-yet-irritating characters, and the chief of these is Facebook's driving force, Mark Zuckerberg, played with exemplary intuition by Jesse Eisenberg.