Actually, the number of non-fillers extends into the high hundreds. Also, the reason there are fillers are to distance the anime from the manga. The manga has to be ahead because if the anime passes the manga, they have nothing to show. The fillers are expected to end sometime soon. Also, just to be more clear, fillers are episodes that don't have to do with the main storyline set by the manga. A filler is an episode that is not taken from the manga and has nothing to do with the main storyline. It adds nothing to the overall plot and is very boring to watch. The worst episode ever in Naruto(103ish) is a prime example. Others include the making of pasta against pasta ninjas and training the school kids. They're worthless and boring