http://www.snazzyspace.com/tumblr/mouse-sparkles.php

http://larsjung.de/twinkle/

http://jarrodoverson.com/static/demos/particleSystem/

http://seb.ly/2010/11/javascript-2d-and-3d-particle-effects-at-full-frontal/

http://seb.ly/2010/11/javascript-2d-and-3d-particle-effects-at-full-frontal/