I personally found Rand to be far too right wing and while she has some good points (what philosopher does not), I much prefer the existentialism of a Kierkegaard or Berdyaeve who I admire much more.
At any rate, Wallace does a good job of interviewing Rand. Given how ideological the presidential campaign is gearing up to be, it is a good idea to get a sense of some of the philosophical influences of some of the main candidates.