We have a great new showcase up on the Cesium website, this one showing Wasurenai, an app focused on the 2011 tsunami in Japan:
http://cesiumjs.org/demos/Wasurenai.html
The interactive map animates the locations of more than 1,000 victims of the tsunami, showing their movements from the time the earthquake hit until the tsunami struck. The digital archive was developed by Hidenori Watanave, who also created the East Japan Earthquake Archive and Hiroshima Archive, showcased on our demos page.