This week's broadcast, hosted by Jane Pauley, features Lee Cowan profile of Simon Wheatcroft, who runs marathons despite being completely blind. Also: Pauley interviews Nancy Pelosi, who has once again picked up the gavel as House Speaker; Mark Phillips interviews actor Michael Caine; Serena Altschul talks with Willem Dafoe and Julian Schnabel, the star and director of "At Eternity's Gate," a new film about artist Vincent van Gogh; John Blackstone visits a Los Angeles exhibition of treasures from the tomb of King Tut; and Kris Van Cleave rides aboard Singapore Airlines' 19-hour nonstop New York-to-Singapore flight, the longest in the world.