Gorobei's Arrow Catch. While the first one was impressive the second takes it Up to Eleven by catching not one but five arrows. One of them in his teeth!
Special mention must be made of Rikichi, and his attempt to shoot a Nobuseri Humongous Mecha with one of their own BFGs. It fails, but it was a noble effort by someone who spent the journey to Kanna as The Load. A subsequent attempt works!
Ukyo acing the test to become Emperor. Then he decides he'd rather have all that power sooner rather than later and takes it the old fashioned way.
Kiku's Dying Moment of Awesome. Cutting the crashing capital ship in half with a disposed Nobusari sword. When Komachi and Kirara find his remains later, all that's left is his feet... and it becomes clear from the pattern of the dirt that he didn't budge a single inch in his last stand to protect the village.