Letterman Apologizes To Wife On Monday’s Show Late-night host says Regina Lasko has been ‘horribly hurt’ by his behavior John Paul Filo / AP Steve Martin, left, is seated as Martin Short shakes hands with host David Letterman, center, during Monday's taping of "The Late Show with David Letterman." October 05, 2009 NEW YORK - David Letterman, days after revealing on air that he’d been sexually involved with women from his television program, apologized to his wife on Monday’s “Late Show,” saying she had been “horribly hurt by my behavior.” The late-night host, building on Thursday’s startling confessional in a...