Haka !!

The Haka is a traditional dance of the Maori of New Zealand. It is specifically a dance that is performed only by males. There are thousands of Haka that are performed by various tribes and cultural groups throughout New Zealand. The most well known Haka of them all is called, "KA MATE".It has been performed by countless New Zealand teams both locally and internationally. It is normally performed immediately prior to the event that is to take place, ie: Sports Match, Conferences, VIP Functions, Hui, etc


from:
http://en.wikipedia.org/wiki/Haka_(sports)