1. Lolita by Vladimir Nabokov
2. Slaughterhouse Five by Kurt Vonnegut.
3. The Devil in the White City by Eric Larson
4. Fathers and Sons by Ivan Turgenev
5. Impossible Saints by Michelle Roberts
6. The Magic Toy Shop by Angela Carter
7. Anything by Haruki Murakami, esp. The Windup Bird Chronicles.
8. Master and Margarita by Mikhail Bulgakov
9.If you want something really down and dirty and in a tough Glaswegian dialogue, try Irvine Welsh- trainspotting or porno. nasty, funny and definately will never be on Oprah's list
10. Anything by Tom Robbins: Villa Incognito, Even Cowgirls Get the Blues, Skinny Legs and All, Jitterbug Perfume.
11. Anything by Jasper Fforde (yes, two Fs in Fforde). He wrote The Eyre Affair and sequels.
12. Oryx and Crake by Margaret Atwood
13. Naked Lunch by William S. Burroughs
14. Fear and Loathing in Las Vegas by Hunter S. Thompson
15. Anything by Chuch Palahniuk...he's too dark and a little bit twisted.
16. The Bored of the Rings by Harvard Lampoon
17. The Fountainhead, by Ayn Rand
18. If on a winter's night a traveler by Italo Calvino.
19. The Crying of Lot 49 by Thomas Pynchon
20. The four Rabbit books by John Updike (Rabbit, Run, Rabbit is Rich, and I forget the names of the other two).
21. Sewer, Gas & Electric by Matt Ruff
22. Motherless Brooklyn by Jonathan Lethem
22. Independent People by Halldor Laxness
23. My Dark Places by James Ellroy
24. Anything by Carl Hiaasen. (Strip Tease, Sick Puppy, Skinny Dip, etc.)
25. The Unbearable Lightness of Being by Milan Kundera
26. Cryptonomicom by Neal Stephenson. Diamond Age and Snow Crash are also good ones by Stephenson that are not likely to end up on Oprah.
27. Atwood's the Blind Assassin as well.
28. A Confederacy of Dunces by John Kennedy TooleRedPoppy
29. Geek Love, anyone?
30. Odd Girl Out by Rachel Simmons
31. After Many a Summer Dies the Swan by Aldous Huxley
32. Dubliners by James Joyce
33. Any of Samuel Beckett's work
34. The diaries of Anais Nin
35. Time Enough for Love by Robert Heinlein
36. From the Corner of His Eye by Dean Koontz (I know what you're thinking but read it anyway, it's amazing) (taken verbatim from message board.)
37. The Princess Bride by S. Morgenstern abridged by William Goldman
38. Erections, ejaculations, exhibitions and general tales of ordinary madness by Charles Bukowski
39. Amsterdam, by Ian McEwan