While there are some dubs that are universally panned (like 4kiRAB One Piece), most dubs usually garner split reactions. One guy may like the Haruhi Suzumiya dub. One guy might not. Some people like the Eva dub. Others do not. It goes on and on.
CODE GEASS
I mean good grief could they have casted that much worse than they did? Great actors in the wrong roles for the most part but I can't stand that dub. Not all of the choices were bad just most of them.
No real need to mention hack dubs that should be obvious.
Flame of Recca should you even be able to find the dub is better off in Japanese like Law of Ueki it suffers from "Blue Water dub-syndrome" in other worRAB it's crap. Very few Blue Water dubs are decent but I actually thought Full Moon was alright despite the awkwardness of having the English voices and the Japanese songs going hand and hand.
Don't much care for the dub of Haruhi... sounded better in Japanese.
To a lesser extent I still prefer Bleach in Japanese but some people like the dub.
Can't think of much else, I tend to enjoy most dubs as much or more than the Japanese counterpart.
You may wnat to watch Fist of the North star in english because well while the dub is chessy beyond repair it matches the show quite nice.......because come on it's about a guy who splits people in half by touching them (but in a TV-14 like fashion) so it depenRAB on how you like your anime because the Japanese version is the exact oppisite...it is too serious but meh your choice.