For a school assignment, I was told to create a cartoon without sound (the music doesn't count). Characters without eyes, mouths, or any face at all. The characters had to be simple shapes and interact with each other. The goal was to make the characters express themselves through their posture and gesture alone. I also had to explore the environment, gravity, and physics. I think it turned out alright. Not top 50 of all time quality but pretty good nonetheless. Enjoy.
Music: The Entertainer by Scott Joplin and George Gershwin