Portland, Oregon is the unlikely capital of a global software revolution. The revolution is called Open Source. And its leader? Linus Torvalds, the reclusive founder of Linux. Linux is the free software code developed by a global community of programmers. It's also the world's fastest growing operating system and number two behind Microsoft.

Torvalds works full time overseeing the development of Linux which he created back in 1991 while at university in Helsinki. Usually media shy, the 36-year-old Finn invited Kristie Lu Stout and the Global Office team into his home for an insight into life at the helm of the operating system that is giving Microsoft some serious headaches.

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