Well, it's going to be a little foray into off-topic territory, but since it was you who mentioned this Henning Wehn guy, I had to admit I don't know him. Not surprising, since according to a Wikipedia article I just had a look at, he's been UK-based for ages and only had limited fame in Germany on a local radio station that I never listened to.
You'll of course understand that you won't get the 100% real deal with this guy, but an anglicized version of German humour adapted to English. But it's fine, there's little point in watching comedy in a language one doesn't know. Too many nuances, word plays, local knowledge that you'd only gather from having been born there or living there for ages - a lot of jokes will go over one's head.
I've tried introducing WOS members to some of our best comedians/cabaretists etc. by pointing to videos with excellent English subtitles that even explain some of the jokes, but to no avail. Fair enough, I can totally understand that people won't be interested, I'm guilty of this myself.
Now this mirrors the WOS thread that went from off-topic to old computers