Google Earth: Extreme Series

An amazing collection (with pictures) of the tallest, the deepest, the largest, the smallest, the shortest... you get the idea. You can see the pictures and read the descriptions here: http://bbs.keyhole.com/ubb/showthreaded.php/Cat/0/Number/299112 but click on the KMZ file at the top of the page to open up a Google Earth tour of these places around the world.