A couple days ago I posted a short video on finding and playing tours of 3D buildings in Google Earth. Oops, I hadn't upgraded to Google Earth 5, but now I have, and I've created an updated video:
You can find the Google Earth tours here. Not all are created by Google, but they're all quite cool. The underwater tour is especially nifty.
Anyone can create anything in 3D! www.3dvinci.net