NBC is hoping to take advantage of the popularity of social media by launching a new program called "Fan It" which will reward users for liking its shows on a number of social networks. Starting May 17 users can visit NBC.com/fanit and login with their existing MyNBC, Facebook, Twitter, MySpace and FourSquare accounts. Users earn points by watching videos of "The Office," chatting about "Undercovers" on Twitter, or liking "Community" on Facebook,