They should make dubbing a crime in my opinion.
It really ruins the culture behind the show.
All jokes get lost in the translation.
Most characters suddenly change in character, voices don't even remotely sound the same.
Not to mention theme songs.... please kill those voice actors... please!

The only dub I have semi-liked was DBZ.
This probably because I don't like the annoying voice of goku and the old style of music used.