Olympic volunteers. They were ace.

Four volunteers. One of whom is striking quite a pose.
Originally uploaded by athens2004blog.

Here's a pic of four volunteers. Unless you had a problem, volunteers didn't really have that much of a role except to be really, infectiously cheery all the time. They'd sit there on their high chairs (like tennis umpires use) happily welcoming you, singing, waving goodnight, giggling, trying to speak the language of whatever person was walking past and just generally making everyone feel welcome and sparky. They, more than anyone, were responsible for the lovely atmosphere that prevailed. Big up the volunteer massive!