Emily Maitlis makes an amazing documentary on the life inside Facebook, from its beginnings to its plans for a new kind of online advertising. It features interviews with Mark Zuckerburg himself and he gives insider details on how Facebook has come to be how it is today.
The documentary uncovers details on how Mark didn't even know himself how to monetise the site. He hired Sheryl Sandberg to help him work out a money making strategy. It also features exclusive interviews with the first investor in Facebook, even before the company had a business plan.
It's worth checking out and a lot can be learned from it. Note: It may only work in the UK.