Job descriptions just shouldn't have "rock star" or "ninja" unless they are hired on their ability to perform music in front of an audience or on their katana wielding skills.
You forgot to mention "brings his katana to meetings" (the sword, not the Suzuki motorcycle).
It's kind of "friend-of-a-friend", but I had a boss who told me about working with a developer who actually did that, I think at a game company in the late 80s.
