Top 3 eh? Pretty difficult to choose, but any of the following will do for me:
Animal Farm, 1984, Farenheit 451, Brave New World, Swashstika Nights, White Teeth, The Quiet American, On the Road, Fear and Loathing in Las Vegas, The Outsider, The Plague, The Age of Reason, Catch 22, Naked Lunch, The Tourcher Garden, The Bell Jar, Unspeak, A Short History of Tractors in Ukrainian, Fortress Beseiged, A Clockwork Orange, The Wasp Factory, Utopia, Othello, Brighton Rock, Junkie, Metamorphosis, Lord of the Flies, Crime and Punishment.