Well we did have at least one similar discusion in the past
HERE, but that was about writers. So here's about books:
The End of Childhood, 2001, 2010, 2061, 3001, The planet of seven suns, Meeting with Rama, Songs of distant earth,... (Arthur Charles Clarke).
The Fundation (the whole triple trilogy - 9 books by Isac Assimov).
The jurney to the middle of the earth, 20.000 leagues under the sea, The Fifteen year old captain (not sure about the english title), The voyage to the moon,... (by Julius Verne).
The Essey on Blindnes, The Notes from a Monastery,... (by nobel prize winner Jose Saramago).
Process - by Robert London (biography of a communist who got arrested during the party cleansing in Checkoslovakia).
Paleandra, The letters of experianced devil,... (by C. J. Lewis).
On the Road - Jack Karuac
The name of the Rose - Umberto Eco
Jurasic Park (trilogy), Time Trap, The Rising Sun,... (by Michael Crichton).
Most of the murder mysteries by Agatha Christie.
The Lost World, The adventures of Speckled band, The Hound of Baskervilles,... (by Arthur Charles Dyle).
The adventures of the three musketeers, Twenty years later, The Black Tulip,... (by Alexander Dumas).
TRUST ME... this list could go on and on and on and on...
EDIT - see, just can't stop adding:
Huxley - A brave new world
Orwel - Animal Farm, 1984
Duglas - Hitchhikers Guide to the Galaxy
Burges - A Clockwork Orange
??? - Budha of the Suburbs
Hesse - Sidharta