I picked up the DVD on eBay last year sometime...Ivan's right, it is an excellent example of not necessarily chivalry, but adherence to a higher code, in this case, the warrior (or samurai, as there are references to bushido)...no matter the cost. For Mike, it is less about thinking and referencing an ideal and more about living it.
I've become a Chiwetel Ejiofor fan as a result of this and other movies, like Children of Men. The man is gifted.