Alex mate. If you've never seen it..
http://www.youtube.com/watch?v=19PQ6...elated&search=
NZ team do it before every match. Great stuff.
Whilst we're here, I remember watching this as a kid live. Very famous try (touchdown). theMusicMan will tell you it was the Welsh what did it though!
http://www.youtube.com/watch?v=AwCbG4I0QyA&NR
Rugby's a simple game. You can only pass backwards or tackle the man with the ball. You can kick forward. Basically it.