By Lacey Johnson WASHINGTON (Reuters) - A first-ever walking, talking "bionic man" built entirely out of synthetic body parts made his Washington debut on Thursday. The robot with a human face unveiled at the Smithsonian's National Air and Space Museum was built by London's Shadow Robot Co to showcase medical breakthroughs in bionic body parts and artificial organs. "This is not a gimmick. This is a real science development," museum director John Dailey said. The 6-foot-tall (1. ...