359. Charles Simonyi
$2.2 billion Self-made Score: ^ Source: microsoft age: 69 residence: medina, wash. Ph.d., Stanford ’76
The only tourist to ever visit outer space twice, Simonyi helped develop some of Microsoft’s most iconic applications, like Word and Excel. In high school he volunteered as a night watchman at a computer lab in Hungary, which allowed him to practice programming on its machines. He came to America to study at UC Berkeley and eventually became Microsoft employee No. 40.