The Social Network (or, as it is known around the world, That Facebook Movie) was directed by David Fincher, written by Aaron Sorkin and stars Jesse Eisenberg, Andrew Garfield, Armie Hammer, Max Minghella and Justin Timberlake.
When Erica (Rooney Mara) breaks up with Harvard-student Mark (Jesse Eisenberg), he goes home, gets drunk and programs a website where you can compare the hotness of two (female) Harvard students. This gets him into trouble, but he also gets a bit of fame out of it. Shortly afterwards he is approached by his co-students Cameron and Tyler Winklevoss (Armie Hammer) and Divya Narendra (Max Minghella) who are planning to build a dating site, Harvard Connection and ask for his programming help. Mark agrees but instead starts to build his own social networking site: The Facebook.
The movie is fantastically written, wonderfully acted and perfectly directed. While the guys involved yould have made a little more effort to include women who are actual characters, everything else is just as it should be and makes for an engrossing movie.