what i dislike:
 

poor, corny english dubs and every final episode of every great anime that i watched with NO sequel!!! T^T

Dubs, poor subs and just like Nakao said, the final episode.

That every American can speak fluent Japanese. Well ok, it's more a pet peeve than something I actually hate about it.

Most of the german dubs. I mean the official dubs. Most of them are just terrible.