Such a good take on that visceral, gross but functional look the circulatory system has. Of course there's the iconic wave, but besides that the way you bump into every little thing and take such a convoluted route feels so in-character for what feels like an imprecise, improvised delivery system - and yet there's only one possible route, disgusting as it looks. Just look down at the veins in your hand and you'll get the same feeling.