Depends on your preferred genre. What do you like to read?
Fiction:
The Curious Incident of the Dog in the Night-Time by Mark Haddon is amazing - the protagonist is autistic with an eidetic memory.
Light by M.John Harrison takes science fiction into the realm of literature, although it isn't for the squeamish.
Iain Banks is a Scottish author who writes both scifi and mystery equally well.
Neil Gaiman is always good - although I didn't like American Gods. Anansi Boys was better. Stardust is a delight.
I'm in the middle of a Jay Lake book that is really getting good - A Trial of Flowers, also scifi.
Non Fiction:
1491 by Charles C Mann - everyone on the American continents really should read this, it will alter your perceptions and truly point out that the history books are written by the winners.
Hegemony or Survival by Noam Chomsky - if you want to know the truth about what goes on in the world.
If you're interested in erotica I'd start with Anaïs Nin and work forward chronologically from there.
Hope that helps!
