Another cheese Ninja movie

I saw a new Ninja movie this weekend - it's just out on DVD. We rented "NINJA" - and it's the first real karate Ninja movie I've seen. The dojo is a karate dojo that happens to teach ninja on the side. Sensei is getting old and its down to the last two contenders for the job, but then one goes bad. He goes out and becomes the world's greastest assassin. The magic box is in danger, so it gets moved and the other guy has to protect it. Comes down to the last true ninja against the ninja assassin. Interesting gear, ok to watch (especially if you like a karate kicking and punching ninja).