If you've ever driven across this great country of ours, you've undoubtedly heard of a place called Wall Drug Store. Not Wal-Mart Drug Store. Wall Drug Store.

Though located in Wall, South Dakota (pop. 800), this little business starts advertising its distant presence while you're at least a dozen states away. Especially on interstate 90 somewhere around Idaho to the West and Iowa to the East, strange little signs start popping up every couple hundred miles. "Only 2314 miles to Wall Drug." Or "Just 829 more miles and you'll be at Wall Drug." Even in remote areas like Canaan Valley, West Virginia, a sign is tacked up outside the local general store and gas station proclaiming that "Wall Drug" is only 2813 miles from where you stand. There is a Wall Drug sign at the South Pole and at the Nort…