Creative copyright is weird. While you couldn't go out and make your own Star Wars movie without getting sued by Lucasfilm, you can, as of this moment, make a horror movie, in which a version of Mickey Mouse is a murderous killer rodent stalking his victims on a vintage steamboat. The reason why? The 1928 short cartoon, "Steamboat Willie," is now in the public domain, just like Winnie the Pooh, Sherlock Holmes, and certain Hemingway novels.
The origin of the new horror movie, Screamboat Willie...