Speaking
of data displays, the Science Museum in London has this very interesting "Social Media Listening Post" - its a whole wall with a grid (a matrix!) of little VDO green screens (the lights you see in the picture) that are displaying the text of posts from a whole lot of internet discussion groups, chat rooms etc as they happen, and it also speaks them out via text to voice in loudspeakers in the ceiling. See pic below:
Its in a darkened room, which makes it a bit eerie as the varied disembodied machine-speaking voices come through - the gaps in the lights you see in the pic (those are the screens) are silhouettes of people, its also weird seeing the people move as the screens refresh. Well worth a visit.