Applications on myspace and facebook show little pushpins on a world map of where you have been.
I think it would be cool, if there was an application you could add to the home page where it pinned the locations of ancestors.
The settings on this application could allow you to choose how far back in the tree you wish to go, or how general/broad you want the pushpins to be.
To take it another step further, this could coincide with google maps so that you could actually see what it is today, and zoom in and see pictures.
To go absolutely nuts, it could also show history on that area in terms of its name and how it changed, especially if it is Europe which only recently has had its boundaries drawn.
