Two computers and a built in DVD player.
There is one old PC under the bar that controls the electric sheep behind the bar, the screen opposite of that in the "dining room" has a built in DVD player and loops "Spotworks," the dvd put out by the creator of Electric Sheep.
The living room is a dual monitor set up. One monitor is the HDTV hooked up via component cables. The other is a standard monitor output that is split into three lines that run to the other three monitors. I duplicate the displays for both my primary and secondary monitor (as electric sheep doesn't yet support dual monitor setups) and let it rip.
Basically a lot of VGA extenders.