Charles Darwin is 200 years old today, and I believe him even if too few of my fellow citizens do. 

In honor of the grand old man, this fool presents the highly evolved setting of Ravel's "Bolero" from Bruno Bozzetto's 1977 Fantasia send-up, Allegro Non Troppo.  Here is Part 1:

And here is Part 2:

(Better quality, but non-embeddable, versions are here (Part 1 - 10:43) and here (Part 2 - 2:16).)

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Photo: "Darwin Has a Party" [at Swarthmore] by Flickr user Colin Purrington, used under Creative Commons license.