[Mr Forever]

When I was first starting to make the transition into the super sentai and larger tokusatsu scene for realsies, the series that most caught my eye was DaiRanger, and I ended up getting a bootlegged copy of the whole series on DVD, raw.
I watched the entire thing.
DaiRanger remains my favorite sentai for a great many reasons, not the least of which was how there were many side story arcs tied in with the main one. My favorite moment comes from one of these side arcs, namely the introduction of one Matoba Jin.
After Jin has just completed another job, this one free of charge because of his personal vendetta against the high and mighty "masters" of martial arts schools, an angered Ryou accosts him and challenges the hitman to a battle. Jin accepts, and proceeds to casually trounce the young man, and Ryou's attempts to fight back only amuse him. However, it's clear that Jin has no intent of actually killing Ryou, he's merely toying with him, giving the boy a harsh lesson in humility. But then, just as Jin is getting ready to finish the fight and leave his foe a battered but wiser man, Ryou snaps and attacks Jin from behind with the Chi powers he gained when he became RyuuRanger.
BIG mistake.
Because now Jin is angry. This young whelp had retaliated with a power he had been given, not one he had earned. He saw Ryou's weakness, relying on his powers as a crutch, and it made his blood boil. What had been a fair contest between two men had been besmirched. In Jin's eyes, it was as bad as drawing a gun.
Now the enfuriated assassin did not hold back, pummeling Ryou mercilessly with superhuman power of his own, power that he had gained through years of discipline, not a costume and a wrist-mounted gadget. After a ferocious beating, Jin was satisfied that his opponent had been sufficiently humiliated, and departed, leaving Ryou bleeding beside a tree.
As he struggled to maintain consciousness, Ryou had to deal with the fact that despite all the powers his Dai heritage had brought him, and all the challenges he had faced thus far, he had been utterly beaten by an ordinary man with a prosthetic arm.
This humbling defeat is what sets Ryou off on his journey from an amateur karateka with superpowers into a true martial artist, a path that would take him through the depths of darkness and the light of true understanding, a light so bright that it could redeem even Jin's troubled soul.

And that, for those folks who've been kind (and dedicated) enough to read this far, is my favorite tokusatsu moment.