mighty mighty all blacks

No explanation necessary, the Haka speaks for itself. Boo yah!

OK well actually, for the sake of education, here's the translation:
(Maori)

Ka mate, ka mate! Ka ora! ka ora!
Ka mate! Ka mate! Ka ora! Ka ora!
Tēnei te tangata pūhuruhuru
Nāna nei i tiki mai whakawhiti te rā
A upa ... ne! ka upa ... ne!
A upane kaupane whiti te ra!

’Tis death! ‘tis death! (or: I may die) ’Tis life! ‘tis life! (or: I may live)
’Tis death! ‘tis death! ’Tis life! ‘tis life!
This the hairy man that stands here...
…who brought the sun and caused it to shine
A step upward, another step upward!
An step upward, another... the Sun shines!