This is a very creative and polished use of the Google Earth Plug-in. Visit this site and take a helicopter tour over Charmonix and Mont Blanc. (via Google Maps Mania)
They run everything through the Google Earth Plug-in, and they’ve done a great job with it. They have some controls in the lower-left corner to change your view, there’s some instruments to help simulate the inside of a helicopter, and there’s an embedded Google Map in the lower-right corner to show where you are (with a track of where you’ve been).
Check out the video below for a brief sample, then go try it yourself!