Celebrity: A 21st-Century Story is a four-part history series charting the explosion in celebrity culture over the last two decades. The world of celebrity has been transformed since the turn of the century, driven by some of the most dramatic technological and cultural developments in recent times. From the fame farms churning out reality TV stars to the rise of the celebrity politician, our complicated obsession with fame now impacts every aspect of our lives - from the things we read and watch to what we buy, and even who we vote for. Today, celebrity is currency, but fame can also come at a cost. We hear from the people pulling the strings and the celebrities themselves as they lift the lid on the inner workings of the fame game.