The previous post asks about movies and the books they were based on, and in the comments to the post, we are also talking about short stories that were made into movies. As has often been noted, short stories are better material for movies because you can cover all the material and even expand upon it. Books, you have to cut down, and so readers are often disappointed.
This made me wonder what the shortest written source material for a movie is. There must be movies based on a single sentence -- perhaps a squib of a newspaper story or a line of scripture or one famous quote. I know often a movie (like many books) begins with a written quote displayed on screen, but that doesn't necessarily mean the the quote was the basis for the movie. I'd like to hear about movies based on a really short, short source. Got anything?