I'd love to see a videoconferencing solution for cheap that dedicates a full wall of your home office (projector and hd camera combo) mirrored to a similar wall

I'd love to see a videoconferencing solution for cheap that dedicates a full wall of your home office (projector and hd camera combo) mirrored to a similar wall at the office, always on. I know there are expensive 100K type solutions out there, but I think a simple kit could be pulled off. If someone wanted to do a quick face to face, they'd just walk up to your wall and start talking :) Additionally you could link walls with other remote workers or other wall set-ups elsewhere in the main office. Edit: a mini short-throw projector would work well here Edit2: for privacy, since this setup would be always on, you could switch to "closed door mode" which would project a wall and door picture instead. Perhaps the camera on the office end could detect using kinect style magic when someone knocks on your "door" :)