There are some obvious choices for me like Hero and House of Flying Daggers but both are a bit more fantastical in terms of the fighting. And of course the Bruce Lee films.
I do love the Police Story films with Jackie Chan. Some of his best work.
Oh and the Jet Li Once Upon a Time films are amongst my favourites.
Wing Chun has both Donnie Yen and Michelle Yeoh and is a great under recognised martila rats films. #
Drunken Master 2 is worth watching as well!