I was two thirds into The House of Bamboo before I realized I've already seen it. There are some memorable scenes, and the whole thing is shot extremely well but there isn't enough momentum to the story. The cast includes Unsolved Mysteries' Robert Stack, Star Trek's DeForest Kelley and Robert Ryan who has been in like half the movies I've watched recently.
This is an good, not great, yakuza movie from the 60's. But, the intro sequence is really good and there are a number of cool sequence scattered throughout the rest of the movie. There are five other films in this series and they are all streaming via Amazon Prime right now.