Clint Hallam, a charismatic 49-year-old, lost his right hand in an accident 15 years ago. Since then, he dreamed of being able to play the piano with two hands once again. Last September in Lyons, France, Hallam became the first human to undergo a hand transplant. CBS News' 48 Hours examines what happens when cutting-edge medical technology gets mixed up with stubborn human nature.