Who wants a plastic surgeon to give them wings? Or a tail? Or horns?
Well, it can be done:

<a href="http://www.guardian.co.uk/medicine/story/0,11381,665328,00.html" target="_blank">http://www.guardian.co.uk/medicine/story/0,11381,665328,00.html</a>

What would you get?

I think the horns are pretty cool, myself. I'd actually feel a lot more confident in a fight if I knew I could just gore my opponent...