Google Blog: Cover the earth: "Last October Keyhole and Google joined forces to integrate satellite imagery with Google search technology in a single product. Now we've landed on Google Earth. You can fly from space right down to any place on the planet and take in spectacular 3D views, and for major US cities you can now see 3D city models. And more: where Google Local works today (the U.S., Canada, and the U.K.), you can search Google Local from within Earth for points of interest, businesses listings, driving directions, and lots more (like some of these excellent locations). True to Google form, there is now a free version. Ready to explore?"
Pretty cool -- download and explore (see links in original post)