Navi the feary in Zelda: Ocarina of Time... The amount of time I've heard "Hey!" and "Listen" with this high tone equals the amount of time I'd shout: "SHUT THE F*** UP!" Furthermore, it's like an overview of the first ten years (or so) of being a father... Best pratice ever: Now I know that I won't howl after my kids later.
Other Choice: Toad (Super Mario Bros.)