What are your favourite fiction books?

My favourite children-oriented book is The Hobbit by Tolkien, which I read first in a translation to Hebrew and then several times in English. Aside from high adventure, I can now say it contained a lot of criticism of the contemporary English society.

My favourite adult-oriented book is The Fountainhead by Ayn Rand which I bought and read once and shortly afterwards my sister confiscated it. Despite loving it, I found it necessary to parody and modernise it, and it is likely that I had a lot of contempt for the original work by Rand.