I have watched almost every single episode and also have each episode on my computer. Dragonball Z is possibly the best show ever and it also carries along with it life messages if u haven't noticed.
eg. When Goku is on the way to Namek there is a life message about the effects of alcohol and it also mentions that after a workout alcohol will dehydrate your body and that sports drinks are a much better alternitive.
The dragonball Z series was awsome until it got to GT and Massive Massive plot holes started appearing lol.