I just visited the marvelous Surreal Calder show at the MIA today and was entranced by a video that played midway through this exhibit. In Cirque de Calder you can see a vast number of toys, automata, and playful creations dance around in a fantastical circus. You can watch it online (in parts, Cirque de Calder- Clip 1, Cirque de Calder- Clip 2, Cirque de Calder- Clip 3, Cirque de Calder- Clip 4).
Its wonderful to see the creations but the real star of the film is Calder, now an old man crouching on the floor, blowing whistles, growling like a lion, and using fingers to walk where his creations fail him. His art and this video give you the sense of a man who truly enjoyed playing and exploring the world in a fantastical way.