Re: YouTube: O'Sensei
Yes it is available from aikido journal, it is a DVD entitled founder of aikido volume 6, superb quality. Not too expensive either. It also contains at the end a surviving interview O'sensei gave on a radio station. Highly recommended.
I'm learning the norito, although proving difficult, because Osensei had his own version, which is based on the Omoto version that differs from state authorised Shinto version.