2008 PRESIDENTIAL WIRE VIDEOWALL... AND INNOTIVE'S VIDEO WALL
Patrick Ruffini built a "2008 Presidential Wire Videowall" using Yahoo! Pipes and Google Video. Very cool.
While at Innotive, we built video walls for our touch-screen plasma application. It's more robust since all the screens are running in a loop and you can click on any of them to see the full video. Anyway, here is an example on YouTube. You'll see the video wall at the very beginning of the demo clip.