At the last place I was working at, they were doing daily comparisons of Big Mac pricing around the world, and were serious about using it as an economic indicator. No joke - they are proprietary market traders (i.e., they gamble with their own money) so to take it as seriously as that means there is some truth in the "Big Mac Indicator".

Mind you though, they made a big loss 1st Q this year, tee hee....