The one I'm thinking of is "Revenge of the Ninja" about a ninja who comes to America to start a new life, but like, this other dude who is his friend is using the ninja's store to smuggle smack inside these super-expensive Oriental dolls (but like, not as gay as Barbie, dude). The good ninja is trying to stay clean and the bad dude is also a ninja and they both end up crackin' steel on top of some skyscraper's roof top.
So, like, the good ninja totally flips out and then the bad ninja flips out, but like, only a ninja can kill a ninja so eventually the good ninja slices open the bad ninja's guts and the bad ninja's blood sprays out all over the place like a high-pressure hose at the car wash.
Its the kind of quality ninja movie only Cannon Films can produce!