Canada's currency is already the world's dorkiest, with its plastic material, transparent windows and holograms everywhere. For a $10 bill celebrating the nation's 150th anniversary, however, the Bank of Canada outdid itself with an Easter egg on its website that rewards visitors with (a dorky version of) the national anthem and a shower of tens down the screen. The best part is that to get it, you punch in the "Konami Code" first made famous in Konami's 1986 Contra NES game.