I just read ‘The Fountainhead’ a few weeks ago. I came to despise Toohey so much that I laughed when he got his at the end of the book.
My mom gave me that one when I was in architecture school because she thought it was about an architect. I've loved Rand's work ever since.
Take a look at Anthem sometime. By far the shortest of the four Rand novels, but the best of the four IMHO. I think of it as having been set in the years after Atlas if the strikers had never come back.