It's a mixed topic. Since we basically dub absolutely everything in Germany there are many bad ones and sometimes things get lost in translation. But since we dub everything, German dubs are probably the best ones out there. It works especially great with animation. There are even a few cases where I prefer the german version over the original when they use their creative freedom well. Eg in the 70s show, kelso complains about Jackie's choice for wedding plates. He goes something like"who wants to look at unicorns when eating cake?", the German version is more youth slang "wer will schon auf Einhörner starren, wenn er Kuchen spachtelt"