In the 80's, the ninja craze was in full bloom. Everywhere you looked, there were ninja! A ninja even made an appearance on Magnum P.I. It was inevitable that someone would make a ninja TV show. Enter: The Master! Starring Lee Van Cleef, The Master followed the adventures of Peter MacAllister and his sidekick Max as they used their ancient ninjutsu skills to help the helpless -- all while avoiding Okasa, a deadly ninja sent to keep MacAllister quiet. You can actually watch whole episodes on YouTube. Just follow the links from this promo spot.
The show should not be confused with another short-lived series: Raven. You can get a taste of that here... And I'll let you decide which show had more potential.