Hector versus Achilles from the 2004 film Troy.
And for something wild. From the criminally underwatched Christopher Nolan film Tenet. The Protaganist gets in a fight with a Special Forces soldier who is traveling inverted or backwards through time, leading to some absolutely wild SFX and choreography to make the fight super unique and entertaining.
And something else equally wild, from the 2008 Thai Film Chocolate starring Jeeja Yanin... *takes a breath* an autistic Thai Kickboxer whose loved ones run afoul of a local criminal organization. The film presents her autism as allowing her to not just excel at her martial arts abilities, but also to better read and predict her opponents moves in a sort of "Taskmaster" style of fight copying or reproduction.
Get both Tony Jaa and Jackie Chan vibes from this action scene.
She is really challenged by a Capoeira martial artist (with some form of Tourettes) whose fighting style is too erratic for her to reliably read.
And finally gotta add Equilibrium. There are so many quick cuts in this fight scene watching it now, but when it came out in the wake of all of The Matrix imitators, seeing a final fight where both sides are just trying to shoot each other with handguns and the whole fight basically being hand fighting was just the coolest thing...
