Lots and lots of Ethernet ports. Wireless is insufficient for the True Geek.
Well, it's not a bad idea. The wiring can be done in a way that you can thread other things when ethernet is no longer fast enough.
Though, if you're going to do that - why not send all the cords to a central part in the house, and install a command centre there? You can use it to re-direct connections, spy on internet usage, selectively disable (or re-route) certain wires