The animation was good, but I gotta be honest
1) It looked like Goku was farting energy out of his butt to fly
2) The running was too slow (Naruto and whatshisname are like 10 feet apart and take 3 seconds running to each other to fight)
3) The movements in general were a bit slow -for DBZ and Naruto you'd expect fast-paced punching and kicking (just 80,000 minute long charge times for energy attacks...tune in next week to see the another long picture of Goku shouting in higher and higher pitches)
4) Vegeta can blow up planets, so can Goku, how are these guys not all dead in 3 seconds?

Aside from these questions/problems, it was good.

Jump! Right off the cliff!

ok, let be that asshole that craps on everyones parade by sounding like a fan boy and stating the absolute obvious. no one, not even the tailed beast combined would be a challenge for goku and vegeta. and dont say its its them from the saiyan saga because you have them going super saiyan in the trailer. i dont doubt your skill as an animator BUT when dealing with pre-existing characters (that have been done to death btw) that already have a story would be hard to swallow or would be taken lightly by most ppl. mixing the 2 worlds and coming up with your own story is great but dont stop there and make new characters.