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For those who are hungry for more, Lucas Vieira Barbosa (LucasVB) has made a lot of great such illustrations for Wikipedia over the years:

Lucas also has an interesting blog: http://1ucasvb.tumblr.com/

And Matt Henderson has some good animations too: http://blog.matthen.com/

Claudio Rocchini [1] has also made impressive contributions to the field of mathematical visualization.