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 text screens that are displaying 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. See pic below:

Social Media Listening Post

Its in a darkened room, which makes it a bit eerie as the disembodied speaking voices come through - the gaps in the lights in the pic are silhouttes of people, its also weird seeing them move as the screens refresh. Worth a visit.