It basically started as a very promising manga series, with interesting premise and characters. But the books have basically now slumped to discard all character development for characters that aren't Naruto or Sasuke, and we have a horrible antagonist to fill in the slot of Orochimaru. I can't see the plot at the moment to be anything other than to mash out deceased characters to brawl with side characters as an excuse for development.
As for the anime, it basically retains all problems and worse with the fillers. I don't think I've seen animes with more fillers than Naruto, theres seasons of this vomit...
In spite of all the flaws, to the least, Naruto has among if not the best action anime production quality out there. The fights look stellar and are beautifully animated.
What do you guys think of Naruto?