Spiritual moments from "Oprah" are revisited. Included: the Dominican Sisters of Mary; plane-crash survivor John Diaz; the parents of Jessica Ghawi, one of the victims of the Aurora, Colo., theater shooting; Rainn Wilson; an Amish couple first met on Oprah Winfrey's and Gayle King's 2006 road trip; and Zimbabwean-American Tererai Trent.