Here are a few from my collection...
Infernal Affairs (HK poster) - one of my faves, I love the film (superior to the Scorsese remake in my opinion) and I think the poster captures the atmosphere of the film well too
Old Boy (Korean poster I think) - posted earlier in the thread, but I like the art and although it may not be as good looking as the US 1-sheet on an aesthetic level, I think it suits the film pretty well.
House of Flying Daggers - I can't remember which countries these are from unfortunately...think one may be HK and one maybe Korea.