Greatest Ninja Movie? Greatest Ninja Actor?
Yes and yes.
There has never been before or since a Ninja film as great as this nor has there been an actual Ninja actor as great as Sir Sho Kosugi.
To confirm my point please watch the following clip of Mr. Kosugi explaining the the complete history of the Ninja and the opening scene of the greatest Ninja Movie Ever, Revenge of the Ninja:
www.youtube.com/watch?v=HTl_XAhRTCw