Convert GIS Data to GoogleEarth
Everyone has seen those GoogleEarth maps on websites, in classrooms, and even on the national news. If you have ArcGIS data that you'd like to see shared among GoogleEarth users (mainly consumers and laypersons) check out Arc2Earth.
From the website:
. . . if most of your spatial data resides in traditional GIS formats (shapefiles, coverages, ArcSDE) it becomes very tedious to translate these values by hand. Likewise, most of this data probably resides in projections other then what Google Earth expects. Finally, ESRI's ArcMap is an excellent cartographic authoring environment that many in the GIS community are used to working with. Arc2Earth was built to remedy these problems and to make it as easy as possible to translate all of the information inside an MXD file into KML. While not perfect, Google Earth does not support much of the rich cartographic styles in ArcGIS, Arc2Earth will translate as much information as possible including Labeling, Renderers, Graphics and Layouts.
Arc2Earth is a little pricey, but definitely something worth looking at. This is the wave of things to come.