The following list has been assembled by pondering on these criteria: sword choreography, characters, editing, music, sound effects and location of combat. Only duels (1) in movies (2) performed by real actors (3) using swords (of any type) were accepted.
This list is completely fan-made but ultimately totally right - so I am expecting no more haters than the amount of parents I have who are disappointed in me: two. Anyway, Here is our Top 10:
10 - Maximus vs Emperor Commodus
9 - Aragorn vs Uruk-hai
8 - Inigo Montoya vs Westley
7 - Jack Sparrow vs Hector Barbossa
6 - Rob Roy vs Archibald Cunningham
5 - Achilles vs Hector
4 - Jet Li vs Chen Zhihui
3 - Zorro vs Captain Love & Don Rafael
2 - Michelle Yeoh vs my future wife
1 - Luke Skywalker vs Darth Vader
Feel free to tells us in the comments how and why we are wrong and you are more than welcome to share the sword duels you feel should have been on the list.