Ayn Rand is one of those authors that you either love or hate. I never finished reading the Fountain Head... I put it down after other books called out to me, particularly one about Horatio Nelson, a true romantic military hero.
My favourite author is, and has always been, Franz Kafka. The way he captures emotion is amazing. I have a really neat book of his short stories and prose, and I read through it over and over, picking up a different thing each time from the text. Definitely my favourite book on hand.
I also really love Tolstoy. Anna Karenina is pure genius. That book is brilliant, and it's such a great read. I love that book.
Dostoevsky is brilliant as well. Crime and Punishment is amazing... that book is a page turner and it really delves into humanity and morality. Love it!