Started watching this last year.
I started watching this series last year on cruncyroll, and I have to say I love it. What a fun cartoon series to watch. I had seen the movie way back in 1995, and was blown away. It wasn't until ten years after that I found out it was an actual series.
The storyline of the series is much more deep than the movie. Dealing with brotherhood, protecting the innocent, and abuse of power.
I'm done the first 4 seasons, and I'm almost done season 2 of Hokuto no Ken 2.