SciFi and Fantasy everyone must read

I was looking for reading lists because it's been years since I worked in a bookstore and I have no idea what's good or bad and what's out there, and I don't think I have a hundred books laying around that I haven't read yet, and I found this one from the Guardian, which is more than the allotted ones I'm to read, but a good place to start to find ones that come recommended. The ones I've read will be bolded, but I don't think there's many of them:

Douglas Adams: The Hitchhiker's Guide to the Galaxy (1979)

Brian W Aldiss: Non-Stop (1958)

Isaac Asimov: Foundation (1951) (tried to read this ages ago and it was... dry? Too difficult? I don't know, I was, like, eleven or twelve, and I know I didn't like it, and I haven't picked it up since.)

Margaret Atwood: The Blind Assassin (2000)

Margaret Atwood: The Handmaid's Tale (1985)

Paul Auster: In the Country of Last Things (1987)

J.G. Ballard: The Drowned World (1962)

J.G. Ballard: Crash (1973)

J.G. Ballard: Millennium People (2003)

Iain Banks: The Wasp Factory (1984)

Iain M Banks: Consider Phlebas (1987)

Clive Barker: Weaveworld (1987)

Nicola Barker: Darkmans (2007)

Stephen Baxter: The Time Ships (1995)

Greg Bear: Darwin's Radio (1999)

William Beckford: Vathek (1786)

Alfred Bester: The Stars My Destination (1956)

Ray Bradbury: Fahrenheit 451 (1953)

Poppy Z Brite: Lost Souls (1992)

Charles Brockden Brown: Wieland (1798)

Algis Budrys: Rogue Moon (1960)

Mikhail Bulgakov: The Master and Margarita (1966)

Edward Bulwer-Lytton: The Coming Race (1871)

Anthony Burgess: A Clockwork Orange (1960)

Anthony Burgess: The End of the World News (1982)

Edgar Rice Burroughs: A Princess of Mars (1912)

William Burroughs: Naked Lunch (1959)

Octavia Butler: Kindred (1979)

Samuel Butler: Erewhon (1872)

Italo Calvino: The Baron in the Trees (1957)

Ramsey Campbell: The Influence (1988)

Lewis Carroll: Alice's Adventures in Wonderland (1865)

Lewis Carroll: Through the Looking-Glass, and What Alice Found There (1871)

Angela Carter: Nights at the Circus (1984)

Angela Carter: The Passion of New Eve (1977)

Michael Chabon: The Amazing Adventures of Kavalier and Clay (2000)

Arthur C Clarke: Childhood's End (1953)

GK Chesterton: The Man Who Was Thursday (1908)

Susanna Clarke: Jonathan Strange and Mr Norrell (2004)

Michael G Coney: Hello Summer, Goodbye (1975)

Douglas Coupland: Girlfriend in a Coma (1998)

Mark Danielewski: House of Leaves (2000) (this one comes very highly recommended from lots of friends)

Marie Darrieussecq: Pig Tales (1996)

Samuel R Delany: The Einstein Intersection (1967)

Philip K Dick: Do Androids Dream of Electric Sheep? (1968)

Philip K Dick: The Man in the High Castle (1962)

Thomas M Disch: Camp Concentration (1968)

Umberto Eco: Foucault's Pendulum (1988)

Michel Faber: Under the Skin (2000)

John Fowles: The Magus (1966)

Neil Gaiman: American Gods (2001)

Alan Garner: Red Shift (1973)

William Gibson: Neuromancer (1984)

Charlotte Perkins Gilman: Herland (1915)

William Golding: Lord of the Flies (1954)

Joe Haldeman: The Forever War (1974)

M John Harrison: Light (2002)

Nathaniel Hawthorne: The House of the Seven Gables (1851)

Robert A Heinlein: Stranger in a Strange Land (1961)

Frank Herbert: Dune (1965)

Hermann Hesse: The Glass Bead Game (1943)

Russell Hoban: Riddley Walker (1980)

James Hogg: The Private Memoirs and Confessions of a Justified Sinner (1824)

Michel Houellebecq: Atomised (1998)

Aldous Huxley: Brave New World (1932)

Kazuo Ishiguro: The Unconsoled (1995)

Shirley Jackson: The Haunting of Hill House (1959)

Henry James: The Turn of the Screw (1898)

PD James: The Children of Men (1992)

Richard Jefferies: After London; Or, Wild England (1885)

Gwyneth Jones: Bold as Love (2001)

Franz Kafka: The Trial (1925)

Daniel Keyes: Flowers for Algernon (1966)

Stephen King: The Shining (1977)

Marghanita Laski: The Victorian Chaise-longue (1953)

CS Lewis: The Chronicles of Narnia (1950-56) (Book 1 at least)

Joseph Sheridan Le Fanu: Uncle Silas (1864)

Stanislaw Lem: Solaris (1961)

Ursula K Le Guin: The Earthsea series (1968-1990)

Ursula K Le Guin: The Left Hand of Darkness (1969)

Doris Lessing: Memoirs of a Survivor (1974)

MG Lewis: The Monk (1796)

David Lindsay: A Voyage to Arcturus (1920)

Ken MacLeod: The Night Sessions (2008)

Hilary Mantel: Beyond Black (2005)

Michael Marshall Smith: Only Forward (1994)

Richard Matheson: I Am Legend (1954)

Charles Maturin: Melmoth the Wanderer (1820)

Patrick McCabe: The Butcher Boy (1992)

Cormac McCarthy: The Road (2006)

Jed Mercurio: Ascent (2007)

China Miéville: The Scar (2002)

Andrew Miller: Ingenious Pain (1997)

Walter M Miller Jr: A Canticle for Leibowitz (1960)

David Mitchell: Cloud Atlas (2004)

Michael Moorcock: Mother London (1988)

William Morris: News From Nowhere (1890)

Toni Morrison: Beloved (1987)

Haruki Murakami: The Wind-up Bird Chronicle (1995)

Vladimir Nabokov: Ada or Ardor (1969)

Audrey Niffenegger: The Time Traveler's Wife (2003)

Larry Niven: Ringworld (1970)

Jeff Noon: Vurt (1993)

Flann O'Brien: The Third Policeman (1967)

Ben Okri: The Famished Road (1991)

George Orwell: Nineteen Eighty-four (1949)

Chuck Palahniuk: Fight Club (1996)

Thomas Love Peacock: Nightmare Abbey (1818)

Mervyn Peake: Titus Groan (1946)

Frederik Pohl & CM Kornbluth: The Space Merchants (1953)

John Cowper Powys: A Glastonbury Romance (1932)

Terry Pratchett: The Discworld series (1983- ) (A few of them)

Christopher Priest: The Prestige (1995)

Philip Pullman: His Dark Materials (1995-2000) (Didn't like the feel or the tone of the first one, and haven't gone back to it.)

François Rabelais: Gargantua and Pantagruel (1532-34)

Ann Radcliffe: The Mysteries of Udolpho (1794)

Alastair Reynolds: Revelation Space (2000)

Kim Stanley Robinson: The Years of Rice and Salt (2002)

JK Rowling: Harry Potter and the Philosopher's Stone (1997)

Geoff Ryman: Air (2005)

Salman Rushdie: The Satanic Verses (1988)

Joanna Russ: The Female Man (1975)

Antoine de Sainte-Exupéry: The Little Prince (1943)

José Saramago: Blindness (1995)

Will Self: How the Dead Live (2000)

Mary Shelley: Frankenstein (1818)

Dan Simmons: Hyperion (1989)

Olaf Stapledon: Star Maker (1937)

Neal Stephenson: Snow Crash (1992)

Robert Louis Stevenson: The Strange Case of Doctor Jekyll and Mr Hyde (1886)

Bram Stoker: Dracula (1897)

Rupert Thomson: The Insult (1996)

JRR Tolkien: The Hobbit (1937)

JRR Tolkien: The Lord of the Rings (1954-55)

Mark Twain: A Connecticut Yankee at King Arthur's Court (1889)

Kurt Vonnegut: Sirens of Titan (1959)

Horace Walpole: The Castle of Otranto (1764)

Robert Walser: Institute Benjamenta (1909)

Sylvia Townsend Warner: Lolly Willowes (1926)

Sarah Waters: Affinity (1999)

HG Wells: The Time Machine (1895)

HG Wells: The War of the Worlds (1898)

TH White: The Sword in the Stone (1938)

Angus Wilson: The Old Men at the Zoo (1961)

Gene Wolfe: The Book of the New Sun (1980-83)

Virginia Woolf: Orlando (1928)

John Wyndham: Day of the Triffids (1951)

John Wyndham: The Midwich Cuckoos (1957)

Yevgeny Zamyatin: We (1924)

You know, alot of the ones I have read, I don't remember that much of. Maybe I'll go back and try again...