Slate has an online feature as part of their election coverage that allows you to trace the activities of the various Presidential candidates. Using Google Maps, the page lets you view a timeline of their campaign stops, select candidates to follow and get more information including news and video feeds from YouTube.
The page could be used as a discussion starter for classes, but is also another good example of how Google Maps and other location-based applications are creating new ways to visualize information.
article at Slate.com