There are plenty of ways to deal with the twinned problems of insufficient plug space and cable tangle, but the obscenely overdone Outlet Wall concept, courtesy of Ironic Sans, is easily my favourite.
Say what you will about practicality—the Outlet Wall looks fantastic. Replacing a wall with hundreds of live outlets is a practical guarantee that you'll burn your entire house down, so in practice the outlet wall have to be made mostly out of dead sockets. Aside from its switchboard aesthetic, its message it what resonates: This room here? This room is for technology. [Ironic Sans via Gadget Venue]