The filming of the riding instruction bits is pretty good there are no sound problems and the video quality is good. As for the acctual instruction, it's all sound advice and is clearly and simply explained. The bit about fixing your bike is, in a word 'budget'. The sound isn't very good and the lighting leaves a bit to be desired. But again the content is good. There are some good riding sections thoughout that break up the film a bit and help it avoid feeling like a school video. The riding technique is very much aimed at freeride and downhill skills with some jumping, but having said that there is plenty to learn in there for XC and trails riders like cornering and speed hops, and obviously the workshop section applys to all bikes.
If you ride mountain bikes then this is certain to help your riding and maintanence skills, so is well worth the money.