1984: The definitive book of the twentieth century? So says a poll of Guardian readers, and I can buy it. Here's the full list:

Heart of Darkness by Joseph Conrad
The Ragged Trousered Philanthropists by Robert Tressell
The Great Gatsby by F Scott Fitzgerald
Brave New World by Aldous Huxley
The Grapes of Wrath by John Steinbeck
Nineteen Eighty-Four by George Orwell
The Diary of a Young Girl by Anne Frank
The Catcher in the Rye by JD Salinger
Catch-22 by Joseph Heller
Bridget Jones's Diary by Helen Fielding

Excepting the ludicrous selection of Bridget Jones's Diary and The Ragged Trousered Philanthropists (which I've never even heard of), it's an okay list. But off the top of my head, in no particular order, here's mine:

1984
Diary of a Young Girl (wouldn't have thought of it, but it's a good pick)
Heart of Darkness (I originally objected to its inclusion, but now can't live without it)
Ulysses (Joyce)
The Metamorphosis (Kafka) (a lame inclusion, arguably, but in fairness sometimes it's sold as a stand-alone book)
Lolita (Nabokov)
White Noise (DeLillo)
Things Fall Apart (Chinua Achebe)
Cat's Cradle (Vonnegut)
Frankenstein (Shelley)

That last one may take me way out on a limb, but think it over, you'll see it's right.

So what did I leave out?