Shipmap is the latest in interactive maps to show the impact of GIS. It is similar in concept to Earth NullSchool.
It is a visually compelling site, which shows the movement of ships around the world, following the routes between the major container ports. Goes nicely with recent books by Rose George and Horatio Clare, and Rose's TED talk on this topic.

The site provides a visual representation of ship movements. It can be viewed or interrogated

Zoom into the map to follow specific routes around the tip of India for example, heading for the Suez Canal, or are there now ships taking the longer route as the cost of fuel has dropped?