Nineteen eighty-four and Animal Farm.
Some links for those of you who haven't read it before:
This put Dan in a dilemma. He had to help her—but if he lent her his computer, she might read his books. Aside from the fact that you could go to prison for many years for letting someone else read your books, the very idea shocked him at first. Like everyone, he had been taught since elementary school that sharing books was nasty and wrong—something that only pirates would do.
Also, since Orwell's works are in the copyright limbo that Australia isn't part of, here's the text of the book, in nice, readable ASCII, with no restrictions. (Disclaimer: It may be a civil infringement for Americans to click this link.)
Side note: Is this an actual example of irony? Discuss!