Profiles of folks with unusual "super powers." Among them: preteen classical singer Jackie Evancho; paraplegic skier and mountain climber Chris Waddell; airplane wing walker Ashley Battles; British artist Stephen Wiltshire, "the human camera," who can draw detailed cityscapes from memory; and wing-suit jumper Jeb Corliss, who leaps (from if not over) tall buildings in a single bound.