People with names like Lakshmi Mittal, Sri Hinduja, Alisher Usmanov, Kirsty Bertarelli, Hans Rausing, Sean Quinn, Nicky Oppenheimer, and Slavica Ecclestone, are all worth well over a billion dollars (actually most of them are worth more than five billion dollars).
The world's rich tend to be people I've never heard of. Sure, there's Warren Buffet, Roman Abramovich, Bill Gates, and the like, and I have heard of them, but most of the world's wealthy are rather anonymous people.
And good for them!
The Times of London has published its 2008 list of the rich:
2008 Rich List of the Sunday Times
Are you on the list?