Kalev H. Leetaru animated world sentiment over time, based on Wikipedia entries.
See the positive or negative sentiments unfold through Wikipedia through space and time. Each location is plotted against the date referenced and cross referenced when mentioned with other locations. The sentiment of the reference is expressed from red to green to reflect negative to positive.
Sentiment stays green for the most part, with the exception of major wars, and I'm not so sure that a world map is a good way to show the relationships. For example, when the animation hits 2000, the map is basically a green blob. It's a good start though and touches on maybe the next step of the coverage maps we've seen lately.