If you have been to the Google lobby, there is a display showing live internet search traffic patterns on a rotating Google Earth. Locations with more vertical dots represent more traffic.
Also, the dropbox guys just posted a video of dropbox traffic in a similar fashion. http://blog.dropbox.com/?p=339
Looking through the Google Earth docs, it's not obvious that this display view is possible out of the box so I'm wondering if anyone else on SO has tried similar experiments and would be willing to share how they did it.