I enjoylove these books more than the ones for which the authors are more famous:
(alphabetical by author)
King Rat, Clavell.
Job: A Comedy of Justice, Heinlein.
God Knows, Heller.
Desolation Angels, Kerouac.
Raise High the Roof Beam, Carpenters and Seymour: An Introduction, Salinger.
The Silmarillion, Tolkien.
San Manuel Bueno, mártir, Unamuno.
Breakfast of Champions, Vonnegut.