Philantropist, FreeSoftware millionaire, and first African in space. Founder of Thawte, which VeriSign bought in 1999 for $750M. Some of the money went to the Shuttleworth Foundation (http://www.shuttleworthfoundation.org/) in 2001, later he founded CanonicalLtd. PythonLanguage fan.
Official web page: http://www.markshuttleworth.com/