The Haka (plural is the same as singular: haka) is a traditional ancestral war cry,dance or challenge from the Māori people of New Zealand. It is a posture dance performed by a group, with vigorous movements and stamping of the feet with rhythmically shouted accompaniment.^[1] The New Zealand rugby team‘s practice of performing a haka before their matches has made the dance more widely known around the world.

From http://en.wikipedia.org/wiki/Haka

Does your team have this degree of ba? If not, what could you do to foster it?