How David Letterman’s Mother Endeared Him to Viewers

The first time David Letterman’s mom, Dorothy Mengering, appeared on “Late Night,” she was part of a Take Your Parents to Work-themed episode, in which the staff, including members of the band, stood not far from their mothers.
Read more: https://www.nytimes.com/2017/04/12/arts/how-david-lettermans-mother-endeared-him-to-viewers.html?source=Snapzu