Naruto and DBZ are both excellent animes. I still find it annoying that so many people think that DBZ is the same thing over and over again because it's not. FireFox. is right.
If you are a die hard fan like some ppl are and have actually watched saga after saga, you'll see that different things happen but the dragonballs simply are involved a lot.
Also there are quite a few sagas where the dragonballs are never even used at all.
Finally there is the question of Naruto vs. Goku. There is no way that Naruto could be Goku and the reason is simple. In Naruto the fighting isn't as intense or dangerous as DBZ. DBZ characters such as Goku can use attacks capable of easily destroying an entire planet, while Naruto attacks though they can be powerful aren't anywhere near as damaging as DBZ ones.
The highest level of power for Goku to reach was Super Saiyan 4 and in this form he was strong enough to hold his own against the most powerful foe in the universe(literally). Naruto however in his strongest form(4-tailed Kyuubi) was able to easily cause high levels of damage to Orochimaru who is quite powerful, but not the strongest in the universe.........Goku would massacre Naruto, but it would be an interesting fight to watch.
All in all both animes are awesome.