I am sure most of these books have been mentioned on this thread but had to add them here.
The Alchemist --- Paulo Coelho
The Moon and Six Pence ---- W.Somerset Maugham
Life of Pie ------ Yann Martel
Catcher in the Rye ---- J.D.Salinger
To kill a mocking bird ----- Harper Lee
100 years of solitude ----- Gabriel Garcia Marquez (I am currently reading this)
and for any science fiction fantasy lovers try the Dragonlance series(Loved them)