When teaching my course on the economics of globalization, McDonalds is frequently cited as an example of a global corporation. And one of the books the students use, The World is Flat, mentions even mentions McDonalds.
Earlier this week, it was reported that the golden arches would no longer be found in Iceland. Today's edition of The Wall Street Journal has a short opinion piece (free content as of this writing) on the event which can provide some explanation of foreign exchange values. It seems that when the global financial crisis sunk the krona (Iceland's currency), it made all kinds of imports more expensive. (To quote from the piece "beef to special sauce, lettuce, cheese, pickles, onions and, we assume, sesame seed buns.")
Feel free to comment. I just thought it was interesting.