I haven't played any of the Dissidia games, so I can't comment on the voice acting there, but I agree about X-2 and KH. FFX definitely has its voice direction issues -- I guess some of the actors ignored the directive to try and match the lip movements -- mostly to do with it being the first time out. But specifically in the case of the whiny teenager moments, I still say that it's not bad voice acting or direction for them to be annoying, because I think it's very likely that they are *supposed* to be annoying. Just like the laughing scene is supposed to be awkward.