Anyone who doesn't get why this was done, basically for chairity (comic relief) a comedian called Peter Kay did a spoof of the old tony christie song amarillo (featured in one of his shows previously) anyway he mouthed along to the song with random famousish people by his side for charity and its been @ number 1 in our charts for ages
This is the british army's version damn funny IMO
http://www.speedfreek.co.uk/armadilllo.wmv
incidentely this file brought down the MOD computer network as it was emailed round so much
more info here
http://news.bbc.co.uk/1/hi/uk/4559345.stm