Sorry for not posting in a while, I am once again in release crunch mode.
I listened to Marc Andreessen speaking at the UC Berkeley Distinguished Innovator Lecture series the other day (webcast link, podcast feed), talking about career decision making, the fallacy of working in large corporations and how tech startup venture capital funding changed within the last ten years. He also mentions that after graduating - while expecting to be a programmer for the rest of his life - he only worked as a software engineer for about three months (supposedly referring to his short interlude at Enterprise Integration Technologies before founding Netscape together with Jim Clark). Supports my impression that he didn't really do any coding on Netscape Navigator.