William Gibson - Neuromancer, Pattern Recognition. He invented a whole genre of literature with his first book.
Isaac Isamov - Foundation, I Robot.
Robert Heinlein - Starship Troopers, Stranger In A Strange Land, The Moon Is A Hard Mistress, The Cat Who Walks Through Walls.
Brett Easton Ellis - Less Than Zero, American Psycho, Glamorama.
Douglas Coupland - Generation X, Microserfs.
Jay McInerney - Bright Lights, Big City, Model Behavior.
Douglas Adams - Hitchhiker's Guide, etc.
Chuck Palahniuk - Fight Club, Lullaby.

Didn't realize it until I wrote that list that all of these authors have something in common - they each had brilliant insights/observations about human nature and liked to use irony and satire to make their points.