Torvalds' personal mascot is a penguin, he invented Linux using an old 386 PC and he insists he is named after a character in the Peanuts comic strip -- in fact he was named after Linus Pauling, the Nobel Prize-winning chemist. Torvalds' operating system is used by computers all over the world and some believe it poses a serious threat to Microsoft's Windows -- not bad for a lone Computer Science student.