Allowing single computers to share resources in local or far-flung networks could be pretty important in the future. It would couple with the idea of mobile ad-hoc networks. When our machines are mostly portable, they won't all be very powerful, and that will be okay, as long as they can access extra computing power or storage when it is needed. So when you take your tablet computer out and about, it won't necessarily have enough storage for your entire music, TV and movie library, or enough computing power to run your high-end games on the go, but when you get it back home, you can slip it into a dock that houses your backup hard drive and a graphics processor to give it that extra boost. The dock, by itself, might not be very functional, or it could be a full-fledged machine in its own right. But when you plug in your tablet, they should act as one seamless environment.
Mokalus of Borg
PS - None of our current operating systems are designed for that.
PPS - And they may have to be, from the ground up.