One thing about subbed/original Japanese language that always annoyed me is the voices for the female characters that are over feminine. No real women or girls talked that way. It's too fake. Dubbed for that type of female characters are usually better. Best examples I can give are perhaps Orihime (Bleach) and Hinata (Naruto).I cannot stand watching anything dubbed now. Totally ruins it. Partly because there's always a lot of licence taken with the script that often mucks with the context, and also because the American accents are usually just so damn grating.
Pokemon and DBZ are the only exceptions.