I saw a show on discovery health once about future technology, and they took a few healthy cells from a man's failing heart, let them grow, and made him a completely new, completely functional, compatible heart for a transplant. This makes me wonder... if they could take the right cells from down below and create the right parts (in my case, take some cells from the clitoris and/or vagina as well as the urethra and make a penis with urethra and everything in tact), then i'd be happy with that. I don't think we'll ever get to a point where we can go in and alter the genes, turning XX into XY and vice versa so that we can actually produce offspring of our own with the right body, but it would still be cool to actually FEEL something during intercourse using normal-sized genitals made from our own cells.