Ninja scroll is anime (good show). Japaneese animation. It is completely different than North American animation.
The difference is that the Japaneese society views animation as an art form. They create animation for children, youth, teens, adults, sexual amusement etc. Unlike North America where animation is viewed as "cartoons." Animation for years has only been sold as Disney and Saturday morning children shows.
It has only been in the last maybe 10 years that it has started to change. Why? North Americans began noticing Japanese animation and that started to be a competitive force in the North American market. Now they are doing major revamping and trying to bring in young adult to adult viewers (just look at Cow & Chicken, Duckman, etc) to watch more animation than anime.
Let a former animation student near a thread like this and see what you get.