Too bad the topic is closed, so I can't reply to your post anymore. So I have to do it this way.
The link to that "German Joke" site actually gave me the creeps, because I despise that kind of "we proof to the world that we are funny, too" things. That and the deliberately hard German accent repel me. Sorry but it's rubbish and has absolutely nothing to do with the current German comedy scene or the things we really laugh about here. It's just another vehicle for non-Germans to project their prejudices and stereotypes on. It really hurts... Sorry for my rant.
Having said that, here are some sketches I find exceptionally funny :)