This comment probably doesn't belong here, but I've seen the movie adaptation of Catch-22. I didn't like it all that much mostly because it did in fact seem quite preachy. It's method of getting its message across was to use a lot of pretty unplausible events (unless military life is really like that), and that just didn't win me over. For anyone who's seen the movie and read the book, are the two very different? I'd consider reading the book anyway though, as it probably deals with the issues much more deeply than a ~2 hour film.