London's army of Gamesmakers were crucial to the success, and the magic, of the 2012 Olympics.
Now there's a call to arms for 6,000 more volunteers - to help make next year's Rugby World Cup a real world-class event.
David Wood has been to the Grasshoppers Rugby Club in Osterley to see how recruitment's going, and to meet one of the committee's more famous ambassadors.
The Olympic Stadium will play a major role in the Rugby World Cup when the tournament comes to Britain in 2015. It joins Twickenham and Wembley on the list of host grounds announced today.
Simon Harris reports.
Rugby Football Union CEO Ian Ritchie says the 2015 rugby World Cup is a chance to grow the game in this country.
Lawrence Dallaglio, the Ambassador for England Rugby 2015 poses with the Web Ellis Trophy at the World Cup announcement.
The Tournament will open at Twickenham Stadium on Friday September 18, 2015, where England will face Oceania 1, confirmed at the close of the Qualification process in 2014.
As well as a selection of Pool games, Twickenham Stadium will also host two quarter-Finals, the semi-finals and the final on October 31.