http://www.bbc.co.uk/programmes/b07l24qp
One Night in 2012 - An Imagine Special
Alan Yentob tells the story of London's Olympic Opening Ceremony, as seen through the eyes of its artistic director Danny Boyle, his creative team and just some of the thousands of volunteers who worked to make it happen. The documentary relates how they united in the face of a cynical nation and produced a warm-up act like no other.