SNAKE WITH LEG, linked by kixie. Awesome fossil of a snake, with legs. Take that, "Creation science"! (Seriously, I have never understood why people see a conflict between evolution and existence of deity. To me, mutation and natural selection are the ways in which $deity creates new species, assembling living organisms molecule by molecule and tinkering with genes. The deity I believe in is the ultimate experimental scientist.)
The other links I have are all video game-related, and none of them are anywhere near as awesome as the snake with leg, so I'll save them for another time.