Banzai! The Samurai Kusazuri fits with both meanings of this Japanese expression: 1) this was a battle tactic by ancient Samurai's, rushing in to battle when it's become apparent their unit was critically weakened and 2) because there's finally some awesome Samurai wear for your minifigures and you're excited! Samurai Armor and a Samurai Helmet are intimidating, no doubt. But for protective wear, the Kusazuri is perfect, keeping your warrior's, um, sensitive spots, shielded from danger. If that's not a reason to shout, "BANZAI!!!" then I don't know what is.

(Photo courtesy La Petite Brique)