Any doubts that Jamaica ruled world sprinting were erased on another electric night in the Bird's Nest. It was a run that confirmed Usain Bolt as the face of the Games, and one that offered redemption - and a gold medal at last - to his team-mate Asafa Powell.
The history books will record that Nesta Carter and Michael Frater ran legs one and two, but the indelible memories came from Bolt and Powell on legs three and four. Bolt screamed around the bend like a train on rails, while Powell put down his head and blew away the mark set by two American teams, taking 0.3 seconds from the world record that they had shared. He was followed home by Bolt who had simply continued running after him, roaring him on. It was another watercooler moment from an unforgettable few days.