Speaking as a potential original body, screw that - I'm not setting foot in a teleporter. But if other people want to try it, that's interesting too. Of course, it's hardly a new problem/paradox; if you haven't seen Christopher Nolan's "The Prestige", it's worth a watch and this is a plot point. And obviously the thought experiment goes back much farther. I'd hardly be surprised if some Greek dudes were arguing about it before the birth of Christ.