See, I'm different. I absolutely LOVE the way all the various actor's portray the characters in Naruto!
I don't mind some of the voices in the Naruto dub; the voice that really drives me crazy is Naruto. The funny thing is that the dub actually sounds like the JP Naruto -- but only when he's angry/yelling/serious and has that gravely quality to his voice. In other words, the English dub makes Naruto sound like he's always yelling, and frankly his voice is just annoying. It doesn't help that he has more lines than anyone else.
(And besides, the dubbed version is censored heavily -- as it's intended for children -- which severely undercuts the intensity of the plot.)
but one that I actually thought was quite good was Inuyasha I actually prefer the dub
The Inuyasha dub is pretty good overall, but the one voice that ruins it for me is Kaede, with her abortion of Old English. I can only assume that it's an attempt to convey the usage of an old dialect, but it ruins the feel of feudal Japan for me when she, for instance, uses phrases like "ye be" instead of "you are".