Miami Connection (1987)
It's a film about friendship, family, cocaine, ninja bikers, a truly international band, rock music and taekwondo, sometimes all at once. Oh, and breaking boards, that too. In other words, Miami Connection is the film you've been dying to see your entire life.
Not that a viewer would notice, but none of the guys involved with this film are professional actors.
Have I mentioned the killer soundtrack? You can find it here.