Oh, I remember this question from the course of philosophy in my university last year.. But the case was about teleportation to Mars (after teleportation your "original" body stays on Earth and your exact "copy" appears on Mars at the same time, somehow like in John Carter). Too bad I don't remember its full interpretation. The main question is who exactly are you and what is the meaning of "you" and difference between "you" and your "copy". Maybe it's time to refresh some memories..