See How Your Net Worth Rates: A Global Comparsion

Check out this very cool site: Global Rich List. Most income comparisons for Americans compare us to OTHER AMERICANS. It totally distorts the picture, since we are the world's richest country. (True, Luxembourg has a higher per capita income, but there aren't all that many Luxenbourgers!)
The goal of the website is to encourage philanthropy. The good news is that the US is the world's most philanthropic country, too. Check out Www.globalgiving.org where you donate directly to projects all over the planet.