If you find yourself on a plane flight across the lower 48 US States, and you’ve got a laptop or mobile phone with an active wireless Internet connection, you have to try out MondoWindow; super-cool! Enter your airline and flight number, and get an annotated view of where your plane is, and what’s visible from the windows. You can also check it out using a randomly-selected flight. Main view is a simulated view of what’s visible ahead …
left …
and right of the plane …
With an “Above” view positioning the plane at its current location in a map view (looks like Bing Maps to me); since most airlines won’t let you use a GPS to monitor your position, this is the next best thing:
There’s an altitude profile as well (though the spike at the beginning can’t be right):
Clicking on the icons in the views brings up either geotagged photos from Flicker for that location, or information about the town located there: