Now that you can drop the concept of GDP per capita like the pros do, check out this interactive map that lists just about every country in the world (226) and their respective GDP per capita ranks in U.S. dollars. These figures are based on the most recent CIA data, with estimates derived from purchasing power parity (a complicated theory used to determine the relative value of currencies). It's also worth noting that both the International Monetary Fund and the World Bank compile their own GDP per capita data with slightly differing results.
The highest GDP per capita goes to Liechtenstein. Never heard of it? It's really, really tiny, has a population of less than 40,000 and a GDP per capita of more than $141,000. In short, Liechtensteinians are living large.
At the bottom of the list is the Democratic Republic of Congo in Sub-Saharan Africa, where more than 71 million people on an average of $400 a year.