|King Joker|
Your Excellency
1. Darth Vader vs. Ahsoka Tano (Star Wars Rebels): This fight was the culmination of years of speculation on my and many others part, and it succeeded in delivering a well-choreographed fight that was true to each character's abilities with an intense emotional weight emanating from it. Though I don't think this fight is the best choreographed among the rest of the duels, it has the most emotional impact for me, for probably obvious reasons.
2. Darth Vader vs. Luke Skywalker (The Empire Strikes Back): It contains one of the most iconic moments in Star Wars (and film) history, and is pretty well choreographed and visually interesting as well. The fight is intense and captivating, which in my opinion is kind of rare among Star Wars duels.
3. Kylo Ren and Rey vs. Elite Praetorian Guards (The Last Jedi): Despite The Last Jedi not having any actual lightsaber duels, this fight easily makes up for that by being exceedingly unique, well-choreographed and intense. I think the fight contains one of the coolest moments in a lightsaber fight, with
Spoiler:
Rey throwing her lightsaber to Ren and him igniting it in the guard's eye. The fact that both Rey and Ren were previously enemies adds to the weight of the duel as well, making it even more memorable because of the new character dynamics introduced between the two.
4. Darth Maul vs. Qui-Gon Jinn and Obi-Wan Kenobi (The Phantom Menace): Definitely one of the best-choreographed duels in Star Wars. I love the consistent change in surroundings, ranging from the hangar to the now-iconic power generator room, and then to the pit. Even though the movie itself was dry and soulless, this fight actually adds something to really look forward to. There's some decent amount of emotional weight involved, but I'm not going to lie and say that it is anything impactful for me. The clear purpose and use of the fight is the incredible 2v1 factor with obvious demonstrations of skill and the only incorporation of the double-bladed lightsaber in live action. All in all, pretty neat.
5. Darth Vader vs. Luke Skywalker (Return of the Jedi): This fight is one of the most dramatic in Star Wars and creates so much depth with the characters involved. The preceding scene(s) to the fight are also some of the best and most memorable in Star Wars, so the fight being surrounded by the best doesn't hurt. I wish the fight was lengthier, but I think it serves its purpose while still providing some aesthetically pleasing dueling.
Honorable mentions: Yoda vs. Darth Sidious (Revenge of the Sith), Anakin Skywalker vs. Obi-Wan Kenobi (Revenge of the Sith), Darth Sidious vs. Darth Maul and Savage Opress (The Clone Wars), Count Dooku vs. Asajj Ventress and Savage Opress (The Clone Wars), Asajj Ventress vs. Luminara Unduli and Ahsoka Tano (The Clone Wars).
This list only considers canon duels.