Take a look at this cool visualization of how zipcode narrows down. It would be even cooler if the image zoomed further down when the zip code narrows down to a very small region. Pretty cool nonetheless.

I am kinda late on this, but how about this camera made by Deja View that can replay upto 30 seconds of the past? Now that's an interesting idea if you ask me! :) Rather simple concept, technically not over-the-top, but still very interesting! Now it's time to take it over-the-top with regards to technology and invent contact lenses that does the same thing and can talk some shortrange wirelss protocol like to that removable storage sitting inside your wallet! :)