Looking for GoogleEarth geopolitical & political maps / layers?
Have a look at here!

Many thanks fly to Valery Hronusov (Valery35) for his precious and priceless work!

Library for automatic connection to popular collections of forum herebelow cited:
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/224706

http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/251067

World countries as polygons:
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/289717

State-Province areas of countries:
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/315823/page/0/fpart/all/vc/1

Education tools (i.e. administrative units, countries and boundaries, earth city lights, major lakes, population, regions, terrain, coastline, aqua, etc.)
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/212964/page/0/fpart/all/vc/1

Cities and Capitals:
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/317717

Airports (International, Military, Municipal, Other airport):
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/315634

Land Features (Continent, Desert, General area, Hill(s), Isthmus, Mountain, Mountains, Other, Other mountains, Topographic feature, Volcanoes):
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/315518

Costal Features (Cape, Head, Isthmus, Landing, Other, Peninsula, Point, Topographic features)
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/315067

Islands (Atoll, Oceanic island, Oceanic island group)
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/314966

Ocean Features (Bay, Fjord, Gulf, Lagoon, Ocean, Ocean hazard, Other ocean feature, Ria, Sea, Straits):
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/314762

If you have others to contribute please do not hesitate to drop a comment!

About KMLer, the ArcGIS 9x extension for professional work with Google Earth that lets you export your GIS works as layers into GoogleEarth:
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/274058