There are so many great science fiction authors that it's hard to know where to begin! Here are a few essential (IMO) recommendations to get you started.
Early SF
Isaac Asimov - The Foundation Trilogy
Ray Bradbury - The Martian Chronicles
Robert Heinlein - The Moon Is a Harsh Mistress
Arthur C. Clarke - Rendezvous with Rama, Childhood's End
Fritz Leiber - The Change War
Kurt Vonnegut - The Sirens of Titan (this one has a lot of social satire--you might especially like it if you like PKD)
Frank Herbert - Dune
Frederik Pohl - Gateway
Modern SF
Neal Stephenson - Snow Crash
Charles Stross - Accelerando
Robert Charles Wilson - Spin
Hannu Rajaniemi - The Quantum Thief
John Scalzi - Old Man's War
Hope you enjoy some of these! Does anyone else have some good ones to add? I'm always looking for recommendations too.
