needs some work.
This wasn't bad, but the beginning was very slow and uneventful. For a non-DBZer, or someone who doesn't normally watch sprite movies, this could make them close out immediately. Add something to look at during the dialogue. Voices aren't completely necessary, while it definitely helps, but the dialogue itself needs work. The lines were very half-done and out of character. Team up with a friend to write a script, and improve the text backgrounds and font color. It was very difficult to see sometimes especially around Shenron. If I sat back in my chair, I couldn't see too well.
The fighting was alright, but it wasn't anything special. Sprites limit you so you have to make use of camera angles, which you did some, but not enough. You know about SMBZ, so watch those fights. While there are few moves, he creates situations that are impossible to encounter with in-game sprites. The perfect example is Yoshi vs Mecha Sonic. That was amazing. I usually am not completely captured by sprite movies, but his fights are wicked. Take note.
The story itself was very uninteresting. Just Goku becoming Evil sounds like a very boring and flat plot. This doesn't need to be Ep 1, it could have just been "Goku vs Piccolo," because it offers little more than that. Also, the 36 time makes it seem like in a day and a half, they can pretend none of this even happened. I'd work on story, dialogue, plot devices, and improve on the fight scenes. Voice Acting is recommended, but that's up to you.
Good luck.