The Economist always publishes great analyses of worldwide trends, even if it famously never puts bylines to its stories. It published a fascinating one recently–the McFlation Index, a process by which it takes the increase in price of a Big Mac in a country and matches it by said country's “official” inflation rate to see if its rulers are cooking the books.
]
Can't show you the graph here because, well, we're not the Economist, but the article also deserves a read. Here in the U.S., our government hasn't really lied to us on inflation–but if you're in Argentina, let's just say the Kirchner administration has done a couple too many cabesazos on the soccer pitch. . . .