I'm new to the site, so here's what I've remembered and trawled from other lists of a few of my favourites.
Fiction
Katherine Neville – The Eight
JRR Tolkien – The Lord of the Rings
JRR Tolkien – The Hobbit
Ian Serraillier – The Silver Sword
CS Lewis – Narnia books
Clive Barker – Weaveworld
Jeff Noon – Vurt
Iain M. Banks – Consider Phlebas
Iain Banks – The Crow Road
LJ Ross – DCI Ryan series
Ian Rankin – Rebus series
Colin Bateman – Empire State
Joseph Wambaugh – The Choirboys
Frederick Forsyth – The Odessa File
Alastair MacClean – Where Eagles Dare
Alastair MacClean – The Guns of Navarone
Alastair MacClean – Bear Island
Jack Higgins – The Eagle Has Landed
Dan Brown –The Da Vinci Code
Philip Pullman – His Dark Materials
JK Rowling – Harry Potter series
Douglas Adams – The Hitchhiker’s Guide to the Galaxy trilogy
Katharine Kerr – Polar City Blues
Stephen King – The Stand
Stephen King – It
Louise Wener – Goodnight Steve McQueen
Gregory Benford – Timescape
Mike Duff – Lowlife
James Hawes – A White Merc With Fins
James Herbert – ‘48
Roald Dahl – James & the Giant Peach
Grant Naylor – Red Dwarf series
Jeffrey Deaver – The Bone Collector
Martin Cruz Smith – Gorky Park
Alan Garner – The Moon of Gomrath
Roddy Doyle – The Barrytown Trilogy
Nick Hornby – High Fidelity
Lionel Davidson – Kolymsky Heights
Eric Ramsey – The Kummersdorf Connection
Robert Harris – Fatherland
David Nicholls – One Day
Ben Elton – The First Casualty
Murray Davies The Drumbeat of Jimmy Sands
Len Deighton – SS-GB
Non-fiction
Steve Hill – The Card
David Niven – The Moon’s a Balloon
John-Paul O’Neill – Red Rebels: The Glazers and the FC Revolution
Peter Hook – Unknown Pleasures: Inside Joy Division
Spike Milligan – Adolf Hitler: My Part In His Downfall
Fred Eyre – Kicked Into Touch
Duncan Hamilton – Provided You Don’t Kiss Me: 20 Years with Brian Clough
Deborah Curtis – Touching From a Distance: Ian Curtis & Joy Division
Danny Sugerman – No One Hear Gets Out Alive
Howard Marks – Mr Nice
Brian McClair – Odd Man Out
Adam Ant – Stand & Deliver
Joseph D. Pistone – Donnie Brasco
TJ English – The Westies
John Frost – A Drop Too Many
Toby Harnden – Bandit Country
Cornelius Ryan – A Bridge Too Far
Terry Christian – Reds in The Hood
Robert Brady – An Undividable Glow
Stephen E Ambrose – Pegasus Bridge