As a fan of these two men as martial artists and actors (whom grew up on me as I watched various martial arts movies, mostly Jackie Chan movies), I comprised this list with indication of who stars in what, taking into account that the parenthesis means that said actor had a minor role in the movie in question, and didn't star in it. A great part of these movies were directed (or choreographed) by the master Sammo Hung himself.
I made this list not only because I'm a fan of the dynamic trio Jackie Chan/Sammo Hun/Yuen Biao, but also because many of their good movies are hard to find or even know of their existence. Take into account that most of the presences these guys had in the early martial arts Bruce Lee movies were only as stunt men and nothing more, not to mention they were actually pretty young teenagers at the time (except from one small role by the eldest of the three, Sammo-Hung, as a villain in Enter the Dragon).
This list is mainly for personal preference and organization, as well as being a future-kungfu-movie-to-pick list :P
PS: If you have any interest in exploring any of these Jackie Chan buddies, just check out Dragons Forever or Wheels on Meals, just to mention 2 of my favorites.