"That Darn Katz!" is the eighth episode of the sixth season of the animated comedy show, Futurama. It first aired on Comedy Central on August 5, 2010. In the episode, Amy's rejected doctoral dissertation—a device to harness the Earth's rotational energy—is used by evil invading space cats to fix their own slowing planet. Since the invention will cause the Earth to stop turning, Amy and Nibbler must team up to stop them while their co-workers have fallen under the thrall of the cats' cuteness. Directed by: Frank Marino. Story by: Josh Weinstein.