Hi,
I am not exactly a fan of Ayn Rand as far as philosophy goes (I might become one in the future

) but I am definitely a fan of hers as an author. I, too, started with 'The Fountainhead' and then went on to read 'Anthem', then 'Atlas Shrugged' and then 'We, the Living'.
'Fountainhead' does have superfluous parts and, IMHO, both Roark and Dominique Francon are shown to be heroic/path-breaking till you get a bit bored. AS is definitely her best fictional work, it has an amazing sweep and scope. Though fictional, it sounds very compelling. In Francisco D'Anconia's speech (or was it John Galt's? don't remember exactly) somewhere near the end justifying reason as the only real way to think, she seems on slightly weak ground.
But all these four books are truly unputdownable. Her first, 'We, the Living' is fascinating because of its situation in space and time.
Looking to lay my hands on 'Capitalism, the Unknown Ideal' and other non-fiction in the near future. The aforementioned book also has a couple of articles by Alan Greenspan, current Chairman of the US Federal Reserve.
-Ted.