Measuring the Universe

This is a great 4-minute animation video by the Royal Observatory Greenwich that demonstrates how useful metaphors are in communicating complex ideas. The video uses metaphors like lightbulbs and fire engine sirens to explain principles like parallax and redshift.

Check out the video on vimeo at: http://vimeo.com/41434123 It may give you some ideas on how to use metaphors to communicate your complex ideas.