We've posted about sorting books by color before (here and here), but it's nice to see it done on a more manageable scale: here's Neatorama reader Chad's chromatic arrangement of his son's Dr. Seuss collection. Astute readers will notice that it's arranged in ROYGBIV order, with white on the side.
http://www.echohive.com/blog/2008/02/22/dr-seuss-collection-organized-by-spectrum/ - Thanks Chad!
And there are 2 copies of Theres No place Like Space. (I think that is waht is says)