A pretty lame list, if you ask me.
I can't believe no-one nominated Morte d'Urban, by J F Powers. Probably because no-one has read it. They are busy reading drivel like Fahrenheit 451.
From the Amazon review:
A comic masterpiece by a criminally neglected writer, J.F. Powers's Morte D'Urban has had a checkered commercial history from the very start. The original publisher failed to reprint the novel after it won the 1963 National Book Award, and although it's had various paperback reincarnations since then, these too have tended to disappear from the shelves. Perhaps any novel about Catholic priests in the Protestant Midwest would be in for some tough sledding. Still, it's hard to think of a funnier piece of writing, or one more accurately attuned to the deadpan rhythms of American speech. Doubters need only consult Father Urban's sermons, which mix pure banality and theological hairsplitting in such exact proportions as to suggest Babbitt in a clerical collar. Yet Powers also manages a kind of last-minute legerdemain, transforming his satiric romp into a deadly serious, and deeply moving, exploration of faith.