Cyclone Nargis hit Myanmar hard over the weekend, causing widespread flooding and taking the lives of thousands of people and leaving many more homeless or displaced. There are a number of people and organizations working to help the people of Myanmar, including the UN Institute for Training and Research Operational Satellite Applications Programme (UNOSAT). UNOSAT regularly publishes maps in disaster response situations. They have data on the path of the cyclone and the extent of the flooding, which is now available in a layer for Google Earth.

Update (5/6, 3pm): Find more information here and here.