Let's face it: The traditional tower desktop PC isn't very pretty. So it's understandable that major PC manufacturers are pushing sleeker all-in-one (AIO) desktops. Not only do AIO systems have a small profile, but many new Windows 8 models are also shipping with touchscreen support. And customers are taking note -- Intel and Lenovo, for example, say the AIO desktop category is now the fastest-growing desktop segment in their respective businesses. Gartner recently forecast that AIO desktops will surpass overall desktops within the next five years as AIO systems and smart TVs become more alike. And Intel is promoting new AIO components to its system builder partners in an effort to prop up the custom PC channel.