Damnit, Spike.
What an amazing series. Awesome soundtrack, characters and action. There's not a ton of worldbuilding but you do get a good sense of the history of the places the series went to.
This one's been in my backlog for a while. The Super Eyepatch Wolf video is what me finally decide to jump on it. If you haven't seen it yet, get to it. Only 26 episodes and there was only one I didn't like (episode 22, with the cowboy).