Watch The Invention of Dr. NakaMats (2009) : Full Movie Online Free NakaMats is an unlikely character made for the movies, an eccentric 80-year-old Japanese inventor responsible for 3,357 inventions, including the floppy disk. With his deadpan English and impeccable comic timing, he provides nonstop laughs— utterly nutty, but also a paean to the spirit of human invention.