Poll: Initials and Last Names (Real-Life People)

Too long, too embarrassing, even too gender-biased (ask J.K. Rowling): for various reasons, some performers, some directors and many many authors (though directors can be considered authors) choose to keep their first names unknown from the general public and be identified by initials plus their last name. Which of these movie-related celebrities (or whose artistic achievements have expanded to the world of cinema), and only known by initials (at least two) is your favorite? P.S. After voting, you might discuss the list here