magatsu,
ever watched "Bicentennial Man" with Robin William? He went thru series of "evolution" to experience humanity before he "die" see this trailer: http://images.hollywood.com/images/quicktime/bicentennialman.mov (http://www.imdb.com/title/tt0182789/)
What about A.I.: Artificial Intelligence : http://www.imdb.com/title/tt0212720/ and http://aimovie.warnerbros.com/html/trailer.html for trailer
we all became human thanks to evolution (never mind about creationism which I don't invest in...) and we are still human no matter what we do with our body. It is how we function makes us human. "To err is human" "I think therefore I am" and so forth..
Let's look up "human" at http://en.wikipedia.org/wiki/Human 
