Howard, I remember the Zatoichi films. Lots of great scenes if you can suspend your belief long enough to enjoy them.
In one, a corrupt magistrate is ordered by Zatoichi to measure a bin of rice using a wooden meauring bowl, and the guy tries to cheat (he's blind, right?) by not filling the bowl each time. Zatoichi's ears twitch at the sound of the rice filling the bowl and when the guy stops, Zatoichi slices the bowl neatly at the midline where the rice was filled to... and orders him to do it right the next time.
To keep on-topic, the favorite duel would be the first match against a drunk Toshiro Mifune who, thinking to make easy bounty money on Zatoichi, tries to take him out with a thrust into the stomach at close quarters ... only to find Zatoichi stepping back unharmed ... he had used Mifune's own sheath to catch the blade.
Aside from the usual Japanese sword pyrotechnics, probably the main reason to watch was that Zatoichi's bumbling self-effacing character departed from the usual stoic, smooth and arrogant samurai .... sort of like Detective Columbo to Amos Burke (you guys do remember "Burke's Law", right?).