Comedy writer Nell Scovell — who quit her job on Late Night with David Letterman in 1990 after just five months because of sexism and “sexual favoritism,” and who called out Letterman in another Vanity Fair piece 10 years ago, following the revelation that he was cheating on his wife with various women who worked for him — sits down with a newly chastened Letterman, and receives a genuine apology from him.