I have to comment about the shut down thing in Windows 8. It's interesting because it shows how people will interact with devices JUST because of what they are. With PCs, apparently one MUST go to Start, and hit shut down to shut down the PC. On a phablet or smartphone, to shut down, one must hold the power button and slide something. To sleep, just hit the power button. On the PC, you go to Start, and hit Sleep or maybe close the laptop lid. On modern devices that are mobile, there really isn't a single piece of software UI that is used to control those power settings. But on the older PC, we're still doing that in the way of Windows 95 whereas you literally can hit the PHYSICAL power button on the PC to shut down or to sleep. After thinking about this, this is SO weird when this becomes about laptops, because they have the button right there under your face, yet it is never used other than to resume the PC from sleep or to turn it back on. There seems to be this rigid tradition with Windows that 8 has fleshed out. On tablets however, even with Windows 8 on, turning the PC off is the same way as other tablets and smartphones: hit the physical power button. On a laptop that is also mobile like the tablet, use the UI to sleep or shutdown. See the strangeness there? It actually doesn't make sense to me.
And personally, part of the design on my new desktop tower will ACTUALLY be a power button that is used as much as a modern mobile device. If you tap the button piece from the front, it will shut down as usual. Tap it from the top of the piece, it will go to sleep. I sleep my PC a LOT throughout the day, as I find it genuinely pointless to do a cold shutdown. Rigid tradition ruined right there.