Google just released Google Earth for free. This program gives you access to terrabytes of satellite and aerial images from all over the world. You can use it for exploring the planet, to find specific locations, plan a trip, ...
Features:
Free for personal use.
Sophisticated streaming technology delivers the data to
you as you need it.
Imagery and 3D data depict the entire earth - Terabytes of
aerial and satellite imagery depict cities around the world in
high-resolution detail.
Local search lets you search for restaurants, hotels, and
even driving directions. Results show in your 3D earth view. Easy to layer
multiple searches, save results to folders, and share with others.
Layers show parks, schools, hospitals, airports, shopping,
and more.
KML – data exchange format let your share useful
annotations and view. thousands of data points created by Google Earth
users.