Who the heck voted full-screen? Everybody thinks full-screen movies are better at first.. ("Hey, at least it covers the entire screen!") but once you realize what full-screen really is it\'s hard to support it.
With a few exceptions in the movie realm, widescreen is by all means the only true way to view a film. (the exceptions being when a movie is filmed at the full-screen aspect ratio, which is "very rarely")
Of course, most TV shows are designed to be full-screen so obviously they work in the FS format.