You know when you go to another country and have no clue what the coins of the local currency are worth? I always end up with a giant handful of international coins, which doesn't go well when I try to spend a Euro in Canada. The US vending machine won't take my Canadian quarters either, or my pesos.
Nevermind the increased production costs, storage, and people cutting themselves on coin wedges. They look awesome. Plus - the one- and five-cent pieces can double as bottle openers.
[via Cool Infographics]