House of Suns
The Fractal Prince (Bk 1)
The Quantum Thief (Bk 2)
The Causal Angle (Bk 3)
The Foundation Trilogy
Dune
Neuromancer
All four books of the Hyperion Cantos
And so many more...
Neal Stephenson is one of the best modern authors. For those who want to stay out of the deep end of SF, read Snow Crash or Reamed. FReepers will especially like Reamed—a novel set in the northwest with backwoods prepper protagonists.