Kitano Takeshi's "Dolls" perhaps? The story was good, although if I recall correctly I deemed it a snorefest. Or maybe Aniki ("taa-baa-ko" "oh, tobacco!"), or Violent Cop...
Infernal Affairs was good, but if you're going to show Infernal Affairs II, do that before Infernal Affairs. Stupid confusing prologue...
As for a Woo/Chow movie, I'd love to see Hard Boiled on a big screen, but I don't know how everyone would feel about that (considering as everyone's probably seen the movie).
Oh, and Gozu