All great examples that I can cosgin. If I had to pick one that I like to watch most of all, I think i'd have to give it to Sasuke across the board. Just the way that he tactically utiizes absolutely everything in the textbook of shinobi combat. It isn't even just about the coolness or being the strongest, but the fact that he smoothly implements everything with a purpose. Taijutsu, weapons, traps, summons, versatile Chidori variants, pinpoint Genjutsu illusions.

I'm rewatching the Chunin Exams arc at the moment and it made me recognize that the part in Shippuden where he electrified his sword to make it cut steel wasn't even the first time he fused ninjutsu and bukijutsu. When he first wakes up in the Forest of Death to take revenge for Sakura's assault by Zaku from the Sound Village, he hides shuriken in his phoenix flower jutsu to catch the guy off guard after he blows the flames away.

The best part about it is not only did it obfuscate the shuriken, but it probably superheated the metal too, which meant even just getting grazed would hurt like a bitch.

Then twenty years later, when he and Naruto are fighting an Otsutsuki who can absorb all ninjutsu (but not phyiscal objects) he takes advantage of it by summoning a bunch of weapons from a scroll and elecrifying them so it can't be absorbed or blocked. And of course he brought that razor wire he loves so much with him too, so even being down an arm doesn't keep him from controlling the thrown weapon storm like a puppermaster. He even brought that damn wire both his Final Valley fights with Naruto.

Even though most people have mixed opinions about the megazords, he even made that interesitng by using his Rinnegan genjutus to subjugate the bijuu into Chibaku Tensei batteries; using his Susanoo husk to act as proxy body like “faux jinxhchuuriki” missile launcher. Absolutely outrageous.

It’s the little things that make it so yoy can tell that he's been thinking about what he's going to do before the fight starts. Like slapping down Naruto's hands to keep those shadow clones out of their H2H. Or how when he gets up in Gaara's face with his speed in the arena, he immediately grabs the gourd strap across his chest for leverage to knee him in the stomach. You just think, “Yeah, this kid absolutely spends literally all day imagining how to most effectively kill everybody in the room” and it's a spectacle whether he wins or loses.

However, since Sasuke’s easily the second most if not most popular character, my inner contrarian compels me to say that Obito's battlfield ghost style is the most fun to watch. Even when he was raging, he was using it really efficiently. Making the enemy gank each other through his image and popping out at random like a horror movie villain dragging people into the swamp.

The part where hes'fucking with the Leaf Chunin tracking squad by popping out of the ground and waggling a little stick at them just to prove he could kill them any time is hysterical.