Apple's iPad was the first real tablet computer to take off as a successful mobile computing option. Since it was announced in 2010, the rest of the tech world has tried to catch up with the hot-selling device. Microsoft is looking to do the same with what they are calling "Surface", a new device that will run Windows 8; which is set for release later this year. Microsoft's Zune comes to mind. What's a Zune? Exactly.