I fucking loved For Whom the Bell Tolls and A Farewell to Arms. But maybe those are more "naturally interesting," being about war and death and passion and the foibles of youth.

I think Hemingway is genius in that he makes the book more about the "Content" than "How the Content is Delivered" (fancy poetic prose and shit like that). It's a much more honest style of writing, one that stands better on it's own merits.