I've seen the movie "Ghost Dog" and I found it to have practically nothing to do with Samurai philosophy. The only thing remotely related to Samurai philosophy was the main character's belief in loyalty to his "master". Unless you like movies with a horrible plot and acting, don't waste your money renting it. This is my personal opinion of course and I'm certainly not a professional movie critic. I'd just hate to see a fellow Aikido student suffer through the same agonizing evening that I did.
You are too late. I too have suffered. Didn't you love the parts when he was riding around in the stolen cars looking soooooooo bored. Clearly, it was as boring to make as it was to watch.