ANIMATED MUSIC. The website Animusic is a revelation. Their video sequences combine animation, music, and imagination in ways that normally occur only in dreams -- or on LSD trips. No apparent human intervention is portrayed -- just spontaneous percussive and tonal effects performed by ingenious and intricate devices. I invite you to sample two Animusic creations, Pipe Dreams and Resonant Chamber. The audio and video quality are, of course, much sharper on the DVDs which the website sells. You can find additional examples here.
RUBE GOLDBERG. In a similar vein, a Rube Goldberg device is "a deliberately over-engineered machine that performs a very simple task in a very complex fashion, usually including a chain reaction." Such devices have delighted and awed audiences for years. Here is one that is particularly well-designed and executed, taken from an advertisement by Honda -- The Cog.