Self portrait in hawk's eye
A close-up of this hawk, quite heavily cropped from the untouched original so you can better see the photographer reflected in its pupil. Accidental, but very pleasing once I noticed. The yellow iris does a grand job of pulling your attention to it as well.
As some of those very nice posters have commented below, the largest version is the best.
From the feedback I've had, I can safely say this is my most popular shot on Flickr. More favorites, more views, more group invites, and more "Best of..." pool awards than any other in my photostream. Thanks, all.