As this century approaches its 21st birthday, Stephen Fry takes viewers through his pick of the fascinating and ground-breaking things that have happened for the first time since the year 2000. On this nostalgic journey he explores a century that has seen huge technological advances and a social media revolution that has affected all our lives. He also examines the most significant cultural and political firsts that have shaped our world over the last 20 years. Through interviews with experts and well-known faces, as well as ordinary people involved in some of the breakthroughs, the programme highlights some of the great advancements we've seen for the first time in the 21st century. Illustrated with a rich mix of archive, we turn the clock back 20 years and witness the great pace of change and ponder what the next 20 years will bring.