I thought it was okay for the most part. First three were the best, of course, but after that it was still pretty good. My biggest complaint is that it started to feel more and more rushed as it went on, which could have been solved if you either gave the season a few more episodes or at least made the finale an hour long. Actually, speaking of the finale, I liked most of it, with the exception of Aku's death. First off, I think there should have been a final battle between Jack and future Aku. It was obvious that past Aku would get his face stomped in once Jack got back to the past, but future Aku at least would have made for a proper final battle. Even past Aku should have gotten a better ending then he did though.