The Social Network (2010) - IMDb
Directed by David Fincher. With Jesse Eisenberg, Andrew Garfield, Justin Timberlake, Rooney Mara. As Harvard student Mark Zuckerberg creates the social networking site that would become known as Facebook, he is sued by the twins who claimed he stole their idea, and by the co-founder who was later squeezed out of the business.
... the social networking site that would become known as Facebook, he is sued by ... is played (in a credited appearance) by Sorkin, the screenwriter for this film.