I just want my books to be engaging. That can mean an engaging plot, clever phrasing, interesting idea, or just entertaining. Some of my favorite books include:
Call it Courage
Code of the Wooster (anything P.G. Wodehouse, really)
Picture of Dorian Gray
Hamlet
Adventures of Huckleberry Fin
The Good Earth
The Wings of Icarus (by Susan Marr Spalding)
To Tame a Land (basically any Louis L'amour does it for me. I don't ask why. It just does)