Promising start.
Overall, I think you have some pretty hilarious concepts here. Piccolo, Popo, Vegeta, and Cell all have rather amusing dialouge and mannerisms. I particularly liked the whole Mr. Popo homo bit. I never did trust that guy, and the Aladdin bit was absolutly hilarious. I nearly died when Popo said "Tell me, princess..." Hilarious. Even the graphics are palatable and easily recognizable.
.
The only major problem (and it REALLY detracts), is the audio. UGGH. The pacing is horrible; rushing through some points, and unintellegible at others, especially the end. The voice imitations could be better too, notably Mr. Popo and Dende. And lastly, though it would mean more work, it would be HILARIOUS to snag a karoke version of that Alladin song and putting a Popo voice over it. That would be GREAT.
.
If you hadn't noticed yet, I'm a huge DBZ fan. You have the basic concepts down, and it's hilarious. Just clean up that audio, please, and this could be top-10 DBZ parody material.