This dude at UCSB has tons of hi-res satellite images. My favorites are the images of the Earth's curvature. It says that there are five pages, but there are actually four.This is a good one.Some things you may see on google earth but most of them you just cant.
http://www.geog.ucsb.edu/~jeff/wallpaper/page.html
http://www.geog.ucsb.edu/~jeff/wallpaper/page.html