Fiction: - The Time Machine (still holds up very well, and seems strangely eerie and prescient in places)... (H. G. Wells) - Dune (Frank Herbert) - The Hobbit (and LotR) (Tolkien) - Neuromancer (William Gibson) - Idoru, All Tomorrow's Parties (I picked up Idoru first, so I haven't yet read Virtual Light) (also Gibson) - The Difference Engine (Gibson, Sterling) - Snow Crash (Neal Stephenson) - Cryptonomicon (" ") - Circuit of Heaven, End of Days (Dennis Danvers) - All of the "Fafhrd and the Gray Mouser" stories and novels. (Fritz Leiber) - The Earthsea trilogy (Ursula K. LeGuin) - 'salem's Lot (Stephen King) - Stranger in a Strange Land (Heinlein) - Adventures of Huckleberry Finn (Twain) - the Coldfire trilogy (C. S. Friedman) - various Cory Doctorow short stories - Kamikaze L'Amour (Richard Kadrey) - Lightpaths (Howard V. Hendrix) - A Canticle For Leibowitz (Walter M. Miller, Jr.) - Moonwar, Venus (Ben Bova) - the Stainless Steel Rat series (Harry Harrison) - Treasure Island (Robert Louis Stevenson) - Ringworld (Larry Niven) - Cthon (Piers Anthony) -- Trippiness level approaching Philip Jose Farmer ;-) - The Hitchhiker's Guide to the Galaxy series (Douglas Adams)…
Also recommended in this reply
- Dune
- Snow Crash
- Cryptonomicon
- The Hitchhiker's Guide to the Galaxy
- Neuromancer
- The Lord of the Rings
- Stranger in a Strange Land
- The Hobbit
- A Canticle for Leibowitz
- Freakonomics
- Ringworld
- The Black Company
- The Difference Engine
- An Enquiry Concerning Human Understanding
- The Gay Science
- Adventures of Huckleberry Finn
- The Devil's Dictionary
- The Stainless Steel Rat
- The Time Machine
- Treasure Island
- 'Salem's Lot
- All Tomorrow's Parties
- Brain Droppings
- Circuit of Heaven
- Cthon
- End of Days
- Fafhrd and the Gray Mouser
- Idoru
- Island in the Sea of Time
- Kalvan of Otherwhen
- Kamikaze L'Amour
- Moonwar
- The Coldfire Trilogy
- The Earthsea Cycle
- The Jefferson Bible
- The Nantucket Series