Well, the Subject pretty much says what I'm suggesting: A wireless energy transference device designed to work through walls, floors, and ceilings. Warning: Do not stand between a transmitter and a receiver, the results could easily be equivalent to standing in front of a fully charged Tesla coil and having it turned on. The idea behind this is to allow power to be transfered through walls (obviously with direct resistance programmed in for materials that would be used in the construction of buildings. The power requirements would probably be massive, obviously, and yield very little at the receiving end. Maybe enough for running lights, but not much more.
Just a thought. Would be nice.