probably Slaughterhouse-Five
Kurt Vonnegut has one of the most profoundly interesting and satirical voices in literature

1984

There's a really great local author from my area(Miami) who wrote a series of dragon novels that were very entertaining. First time i read a whole series that kept my interest other than harry potter.

In order of date:
The Dragon Delasangre
Dragon Moon
The Seadragons Daughter
A Host of Dragons

Definitely worth a read for people that like shapeshifters , these dragons are human/dragon combonations and the books really tell a good strong story.

Also on my Favorite most interesting books list,

The Giver
The Alchemist
Charleine Harris's- True blood series

1984. Couldn't put that book down.
the entire "enders game" series...both paths of it...kept me entertained the whole way through the book..and they were genuinely interesting

Kafka On the Shore by Haruki Murakami

I have only read 5 books by him, but this one were truly inspiring, and still a little bit bizarre.

Eragon series is very good imo.

once again i must say Hyperion

also alan leos astrology booklet is very inspiring

atlas shrugged.

The Dark Tower Series - Stephen King
Inkheart, Inkspell, and Inkdeath - Cornelia Funke

That is a terribly small world compared to The Sword of Truth and Game of Thrones, and even Darktower. Though Darktower is a terrible series. Probably because I could not get the picture of Clint Eastwood out of my head as the main character.