Most people I know have grown up with and used either a Windows PC or a Mac their entire life but, people never talk about Linux. Linux is MASSIVE and is run very differently from Windows and Mac. Modified versions of Linux are used to run everything the ISS to washing machines to PCs and even movies(like the first Toy Story). Linux had been modified and sold in all kinds of different forms under different names by different companies like Debian, Ubuntu, Fedora, and Arch Linux. It is the perfect subject for a bigger than you know video.