Back in May I was waiting for a geobrowser capable of showing KML in different projections. Inspired by a great blog series by Richard Marsden (1, 2, 3, 4, 5, 6 & 7!), I've done some experiments with OpenLayers and Proj4js.
This example shows a KML document from the Thematic Mapping Engine in three different projections (Mollweide, Sinusoidal and Equal Area Cylindrical). The KML document contains borders, but these are not extracted and displayed by OpenLayers.
OpenLayers and Proj4js rocks! :-)