The Matsushita TH-LB10NT LCD supports four different PC connections simultaneously over WiFi at a combined resolution of 1,024 by 768. WiFi doesn’t have enough bandwidth to function like an actual monitor cable, but presumably some type of software is used to forward screens to the device, not unlike Remote Desktop functions or VNC (which is to say, don’t expect to use this to play games, or even video). While I can’t imagine it would be useful for most people, something like this would be a dream come true for design meetings, where everyone wants to update their work and show it in real time.