The new monitors in our teaching lab are big and cool, but now I want something bigger. The folks at Pruned pulled together some examples of very large monitors. Now we are shopping around for a Smart board where we can look and touch with our fingers. Pruned recenly looked at some interactive boards that are VERY cool too. The link to the Jeff Han video is great and quick.
And here is an example of an interactive display where multiple people can walk on the display board while the computer draws voronoi polygons around them - live. That is very cool.