If you are new to Tai Chi, then I think this has some of the ground work you will want to learn. I agree that the styling for the video is somewhat dated and eighties looking, but I personally find this charming and it does not distract from the core values in the video. There are some excellent workouts and if you take the time to really learn the tai chi form demonstrated, you will find the benefits from it can come into your life.
It is not as well crafted as his later videos, but does contain some really good instruction and will get you on the road to health and flexibility. All in all a good 'introduction for beginners' as it is called. The meditation section is also nice and has some valuable lessons.
Style isn't everything!