Technology changes fast – very fast. Today's never-been-done-before groundbreakers will rapidly become the old news of tomorrow. Remember pagers? Now your phone fills that need. Or what about those standalone GPS devices? Our phones take care of that, too. Then there are things like 45 rpm (or 78 rpm!) records, and even iPods. Whatever happened to your Walkman, anyway? It happens to everyone, sometimes every day. What was once very important just a few years ago is now obsolete, or on its way to being so. If you remember who shot J.R., see if you remember what these things are – or were – used for in their heydays.