As a veteran entertainment reporter I am constantly asked, 'what's the best and worst interview you've ever done?' and I give the same answer for both -- Robin Williams. I was in college when I interviewed Williams for a tiny movie called House of D starring Anton Yelchin, and directed by David Duchovny. The movie wasn't terribly memorable, but the interview was unforgettable. I describe it as the worst interview I've ever done simply because I don't think that Williams answered a single question with a straight answer. And yet, at the same time, it was …