I'm a big fan of the late physicist Richard Feynman. In the 1980s he did an interview/documentary with the BBC entitled "the Pleasure of Finding Things Out", which among many other of his documentaries has enjoyed a new lease of life on the internet.
The audio for the above is just one of many inspiring clips from said documentary. (see vimeo.com/72360531) I recommend viewing the whole programme if you get the opportunity.
I adapted Josh Burton's excellent free "Morpheus" rig from http://joshburton.com/projects/morpheus.asp to animate the piece.