Would it be possible to create a "room" where you can virtually walk through,
on one side are the monitors (like the one in Saturn, an XXL wall of TVs, where each monitor shows something different, and a few meters further if you "walk" you can spray/paint graffiti, or rollercoasters, Google Earth/Universe =D whatever... (like your own theme park that you design yourself) then?
This will probably "only" be possible via an application...