He recently started doing "power laps" around the apartment. He just takes off like a rocket and runs this "course" around the place. He runs from the bathroom hallway, into my bedroom, over the bed, across the computer desk, into the living room, behind the TV, over the end table, across the back of the couch, into the kitchen (where he slides across the floor while trying to turn), over his food dish and back into the bathroom hallway where he takes a second to breathe and does it again! Sometimes he is kind of "yelling" when he does it. Making this weird not-quite-meowing noise. It almost sounds like he is saying, "brooowwww rrrooowwwww" almost growling. It is pretty cute and totally knocks him out..lol