3. 'The Bourne Identity'
When The Bourne Identity hit theaters back in the summer of 2002 Universal Studios, even in their wildest dreams, probably didn't think they were kicking off a franchise so massive it would eventually run on two parallel tracks and gross enough money to feed a small continent. It all started with this adaptation of Robert Ludlum's 1980 novel about a government agent whose memories have been erased. It grossed $214 million and generated two immediate sequels. Damon recently signed on for a fourth chapter, and Jeremy Renner also has his own Bourne movies going. That's a lot of Bourne, but if Universal thought it would be profitable they'd throw another three or four of them out there.