Asus has unveiled a concept PC that looks nothing like anything currently on the market (though it does look a bit like the bookshelf PC from the Microsoft/ISDA design contest). Instead of a beige box, the PC is an open shelf; its innards consist of a series of modules that can be connected to the PC simply by being stacked on the shelf, where they get their power via induction and communicate with other modules wirelessly. Just Swap modules to upgrade your processor, get a new hard drive, and or a new graphics engine. Right now, this is strictly on the drawing board.