Sky Captain
As a story, it's a comic book. As a movie, it's a visual feast. Fans of 1930s-'40s science fiction pulp magazines and cliff-hanger serials like Flash Gordon will feel right at home.
Imagine an amalgam of Riefenstahl's Metropolis and the machines from Frank R. Paul's Air Wonder Stories cover art, but rendered by N.C. Wyeth, with lighting by Edward Hopper and background paintings by Maxfield Parrish.
Treat yourself to a matinee.