European humor itself is pretty hard to get without knowing context or language. Translations help, but a lot of non-English humor loses something in the translation. Also, you might deliver tofu like a pro on Earth, but can you deliver tofu in space?
I've been watching more and more of those "TED Channel" videos, like the scam email-one you linked in the "funny video" thread. Is TED some sort of network or event for comedians or something? I'm really intrigued!