In sports there are numerous methods of intimidation used against opposing players and teams. But none are more famous nor effective as the pre-match tribal dance used by the All Blacks rugby team of New Zealand known as the Haka.
That Munster one was good, forgot that had happened.
But I agree with Morozov, that one in 2008 RLWC is my favourite too. Especially after the fact, beating what was claimed in the papers as one of the most talented Australian teams ever assembled. I enjoyed the face off too.
Other countries play Rugby too, I watched the Canada games at the World Cup last year, and they never got to do anything.
It just seems a little unfair to me
There's nothing unfair about it. If Canada wanted to do something, they'd be allowed to. Hell Australia has used Waltzing Matilda in response to the Haka. It's not that "they never got to do anything" it's that they didn't do anything.