Liked the very interesting Whitman images, which make up one from many. These are similar in some respects to the cover of Nature for the sequencing of the genome (also, linked below).
http://www.levity.com/digaland/whitman/index.html
http://bioinfo.mbb.yale.edu/~mbg/dom/fun3/nature-cover/
http://www.nature.com/nature/supplements/collections/humangenome
