Brian Leiter asks whom we most wish the media would stop referring to as a philosopher -- Ayn Rand, Jacques Derrida, or Leo Strauss. Derrida at least was hired to teach philosophy at the Sorbonne, and Strauss did his dissertation with Ernst Cassirer. Can't say anything like that for Rand.
My thinking on this is that when Derrida or Strauss is thought of as a philosopher, that's an embarrassment to philosophy and a problem for the humanities. But when Ayn Rand is thought of as a philosopher, that's a disaster for philosophy and a problem for the world. So I voted Rand.