My friend and I one night spent about 2 hours in front of my laptop live-commentating the BreveCreatures screensaver, in which procedurally generated polygonal creatures attempt to walk, and pass on patterns and configurations to the next generation.
"Looks like we've got another flopper here. That might have flown a couple generations ago but you know, we've been seeing some really effective writhing lately."
"I totally agree. The bipedal taildraggers were a force to be reckoned with in season 56, but — oh my god! Look at that one go!"
"Almost got as far as that three-legged galloper we saw just a few minutes back. This is a heck of a race, my friend!"
For hours. We were drunk.