I saw this post on Geekologie this morning and had to flag it up as ball crunchingly amazing.
I've never seen picures of the eye where you can actually see the structure of the iris so well:
It really is breathtaking to see the folded nature of the iris, the ring of muscle which contracts iris to dilate the pupil (oh yes, whipping out my A-Level Biology bitches! Thankyou Miss Evans...). I want to thank GW at Geekologie for bringing this to my attention - as well as bringing to my attention many other things, including how to make a motorbike out of two cheap lighters, the evolution of the Batmobile and the homemade lightsabre from last week. However, I DO NOT THANK him for the picture of Admiral Ackbar in a bikini... no, just no.