Very good! Some small complaints: First, some of the lines were fluffed. Most of them were fine, and would have been right at home in a real DBZ episode, but I'm thinking of little things, like when Vegeta is asked if he is referring to himself as a true warrior and he answers with a simple "Yes." Some lines just need better emotionality as well, but that's just something that sometimes can't be helped.
My other complaint has to do with the action scenes. I know how much time these sorts of animations can take, but a lot of action scenes were very anticlimactic. What specifically comes to mind are when Vegeta first powers up, and when the villain is punched through a wall. There's very little to convey action besides the movements of the characters. A good example of conveying action through things like camera movement and lighting is Oney's "Chris & Harry," dated and retarded as it is.
Very nice though. Just some room for improvement.