Robert J Sawyer is an author who makes you ask yourself big questions. This novel, set in 2045 US and Canada, sees new technology developed which allows people (for a large fee, of course) transfer their mind to an artifical body, while the biolodigal self, the "shed skin" retires/is exiled to the far side of the moon.
Thus begins the debate, what makes us who we are. This debate eventually becomes a court battle, taking up the final 2/5ths or so of the novel.
All angles are attacked. Are we merely the sum of our experiences? If your mind is moved, does the soul go with it? The reason i like this novel, and some of the authors other work, is becuase it made me ask these questions. Of course, being a RJS novel, the main character is a Blue Jays fan. This helps too.