love this shot ...
love the distortion ..
i'm tossing up whether to get the canon or sigma 10-20mm or possibly a tokina 10-17 fisheye .. its a difficult decision .. :)
Great perspective - I seem to have an affinity for in-your-face cow shots. :) On my monitor, the whiskers look like you are getting close to that fine line between sharpened and oversharpened. Great job though, one of my favorites for the challenge.