Cat righting technique. Source
I found this article on Wikipedia and just had to post it. Everyone is always referencing a cat's ability to land on its feet after a fall, and this Wikipedia article explains just how it works. If you don't want to go through the trouble of reading the article for yourself, the simple version is that cats have very flexible backbones and no functional clavicle to get in the way of midair rotations. Cats are able to spin rapidly during a fall so that they land on their feet reliably from a fall of at least 30 centimeters.