Hopefully you don't find the above animation too annoying. I found this "animated .gif " at a site in Germany called "The Virtual Water Project." What these individuals have done is calculated the water footprint of each nation and/or food group using data from UNESCO research papers: Water footprints of nations, Value of Water Research Report Series No. 16, UNESCO-IHE, Delft, the Netherlands.
If you go to the link listed at the end of this paragraph, there is a Flash graphic where you can click on an icon such as a cow, an orange, a pig, an ear of corn etc. and it will tell you how many liters of water are needed to produce such an item. For instance, it takes 840 liters of water just to produce the coffee beans and the water therein to make a simple pot of coffee. Water footprints for entire nations are listed as well. [Link]
Originally found at Not Cot.org