Ask HN: What to do with 110 inches of Plasma?

So my office has four 55' tvs that make up a video wall for presentations, however most of the time there is no presentation so the screens get set to CNN/SportsCenter/Etc. We're trying to think of some fun visualization for the screens to default to and I was wondering what the HN crowd would do. We're a communications company so I was thinking about maybe some Twitter visualization or something. Cheers, Brian