I'm putting on my evolution nerd hat for a minute. Paleontologists have discovered a so-called "missing link" in the transition from fish to land tetrapods. Past finds have hinted and teased that the lobe finned fishies eventually adapted their fins to legs and began crawling out of Devonian era rivers. Well, Tiktaalik roseae is a transitional wet dream.
Finding the skull, neck and limbs were the key. The skull and neck show far greater flexibility than a fish yet the limbs are obviously "fins". However these fins have what can only be described as precursors to digits found in tetrapods. The thing has fingers just not completely built out yet!
So the next time some rabid creationist starts babbling about there being no transitionals, just throw this bad boy in their face.
Read a complete description of the find and methodology at Pharyngula.
h/t: Panda's Thumb