At least the 1st novel is like a kick in the stomach at times. It also moved me to tears on a level I would thought impossible. Includes: Spiked killing machine, Poetry, evil AI's and a Scifi world/society that feels way more believable then Star Trek/Wars ever was.
Timothy Zahn - (1st) Thawn Trilogy
It is hard not to like these books if you like Star Wars IMO.
Imaginary Friend - The Bible
Most of it can be skipped but select parts like Genesis and the Sodom and Gomorrah bit should be read. Cant imagine that there isn't a list for that.
My "short" list consists of the best known books of these people: http://en.wikipedia.org/wiki/List_of_Nobel_laureates_in_Literature. Names like Aleksandr Solzhenitsyn, Ernest Hemingway, Hermann Hesse and Bertrand Russell speak for themselfs.
I have only read very limited passages from those authors. That glimpse convinced me however that their works must provide the best access to differing points of view possible.