When I REALLY mean business I have a little move that's guaranteed to get attention, and I wanted to share it with you. I don't use it too often, so the impact remains high.
Picture if you will - I rear up on my back legs into a standing position, the air is then attacked with my front paws, (now the really killer move) two short hops on the back legs, and finally I tear down the hall like my tail is on fire (always towards the offending item like empty bowls or an unacceptable litter box situation). Feel free to ignore the laughter of your family.