What can you do with lots of computers? Cloud computing allows us to scale up (and down) very quickly, but how do we do that? And what do we do with such scale when we can? Well, worry no longer, because Aja Hammerly has come up with many ideas for what you can do with large numbers of computers. Between playing games, solving problems, and building huge regular expressions, this talk is fun and interesting, and shows what you can do with some Ruby, lots of computers, and a playful imagination.