At last month's Mobile World Congress, Android was on everyone's lips. And not just for cell phones, but as an operating system for all kinds of network-enabled entertainment devices. Indeed, a number of manufacturers make embedded Android wares which would allow the operating system to run on anything and everything. So far, most Android devices that are shipping, or near to it, fall into three categories: the iPod knock-off, an entertainment device sans phone otherwise known as a mobile Internet device (MID), the netbook and the tablet. Here's a sampling.