This week's broadcast, hosted by Jane Pauley, features Erin Moriarty's cover story about the controversial practice of conversion therapy, and speaks with people who have undergone the process (banned in some states) aimed at turning those attracted to same-sex partners into heterosexuals. Also: Jim Axelrod interviews The Who's lead singer Roger Daltrey; Seth Doane travels with a World War II veteran back to Cologne, Germany, the scene of a fateful tank battle; Tony Dokoupil talks with comic actor-director Ben Stiller, now directing a prison break drama for Showtime, "Escape at Dannemora"; Serena Altchul talks with playwright Kenneth Lonergan ("The Waverly Gallery"); Richard Schlesinger looks back on the 1968 election of Richard Nixon; and Ben Tracy explores a new wave of Neapolitan pizza making – in Japan.