I am celebrating Darwin Day just by looking around at the "intelligent" primates all around me and marveling at both how far we've come, while simultaneously chuckling at how... ape-like we are. Look at all those people, eating and pooping and grooming and gesturing and grasping, orienting themselves towards interesting stimuli, making little social maneuvers as they constantly mill about. And at the same time, writing and learning and thinking and planning and communicating and storing information and creating new and marvelous technology and internally simulating life situations on a grand, grand scale.
Truth be told, I am more interested in cat evolution than human evolution. I totally want a thumb cat!