"THE BIG MAC INDEX - The Economist's Big Mac index seeks to make exchange-rate theory more digestible. It is arguably the world's most accurate financial indicator to be based on a fast-food item. (Here is a brief explanation and video clip.) As a side-order, this selection of articles includes our Coca-Cola map of the world, our Starbucks tall latte index, the reflections of our Washington columnist on the place of the hamburger in American life, and other articles about McDonald's and fast food."