That Darn Katz!
Futurama Season 7 Episode 8 (08/05/10)
Amy goes to present her thesis idea about using the Earth's rotation to generate energy and a Professor with his cat instantly rejects the idea. Later, we find out he was actually controlled by a cat and those cats steal the idea and enslave the Futurama crew to build a device to harness the Earth's energy. With the rest of the crew under the cats' control, Amy and Nibbler team up to stop them.