Yes! That one and "The Fountainhead" as well. Fascinating. I found myself very absorbed and still think about many of the characters even though it's probably been over 20 years since I read them. There's a surreal quality to them (that level of altruism just does not occur in real life, at least not in my real life!) and yet within the context it is all totally believable.
If you do read it, post your reaction here... it'd be great to hear what others think about the book. =)