Found a couple of small typos.
1) On the screen that says: "O'Sensei is considered the greatest martial artisit in history..." I believe it should be O-Sensei and not O'Sensei. Whenever I see it with an apostrophe it always make me think of O'Sensei as the great teaching leprechaun
2) I'm guessing the screen that says: "has accored his legenday status." Is supposed to say accorded instead of accored.
I think Steven is right about doubling up on the Shihan/Sensei thing.
I'd also agree with Jory that some of the segments may be a tad long.
Overall a nice video, you did a goo job with it.