Anyone not heard of Microsoft, or Bill Gates? Well, if not, all you need to know is that Microsoft is big for a reason. Love them or hate them, they have a huge range of globally renowned software products - their flagship being the Windows operating system that runs most PCs.
Along with Windows, they also provide Office software like WORD, Excel, Powerpoint and so on.
Perhaps not as widely know, but definitely cooler is the fact that they also make the Xbox, games for the Xbox and plenty of PC games. If you have a PC (like me), I would absolutely recommend trying out something like "Age of Empires". As far as I am concerned, one of the most enertaining strategy/adventure games ever.
For anything to do with PCs or business software, check it out.