Yet another good thing to come out of Idaho, Earth Point is a collection of free (at a limited use level; first 200 lines) GoogleEarth tools developed by Bill Clark that allow users to do useful things such as convert lat/long data from an Excel spreadsheet to a .kml file that can then be viewed in GoogleEarth. Unlimited use is very reasonably a fraction of a penny per line, or free for academic use. I've been using it to make nice maps of climate data collection stations in New Zealand.
