I need a good book.

[Eofofo]

1984 by George Orwell. One of the only "classics" I really liked.

 

[Mcmuffin]

I think no ones said this yet. The Wheel of Time series is awesome. Very very long, Worth it times 200 though.

 

[monkeyonnos]

The book thief. It is the most amazing and unique book i've ever read.

 

[Greenhand]

I'd recommend going to the local library and picking up a few anthologies in your preferred genre(s), it's a great way to find new authors and you can find a number of hidden gems that way.
On a more specific note: Ender's Game and (to a rather lesser extent) Speaker for the Dead, both by Orson Scott Card.
The Wheel of Time series by Robert Jordan and Brandon Sanderson.
A Song of Ice and Fire by George R. R. Martin.
Anything by H. P. Lovecraft.
Dune by Frank Herbert.

But seriously, anthologies are the way to go to find grossly under-appreciated authors. You can also find collections of short(er) stories by some (Dreamsongs I and II by GRRM springs to mind), and they tend to be great reads.

 

[Kris Page]

Steven Erikson's Malazan Book of the Fallen. 10 book series, on the large side but well worth it. Just finished the last one (The Crippled God) it was one of, if not the, best book I have ever read. Well worth the wait. I would also recommend anything by Eoin Colfer, shorter books but written very well.

 

[Hader]

I recently read "House Made of Dawn". At first it's a bit confusing to read, but I grew to like the writing style eventually. A very interesting novel. Won a Pulitzer at least.