Ever since the “Brian is a robot” thing appeared in the comic, I was wondering why the “is that person a robot” question seemed familiar. I finally remembered – there is a person suspected to be a robot in Gunnerkrigg Court. (I assume everybody already knows Gunnerkrigg Court, but if you don’t: go read it! It’s wonderful.)
Fortunately Brian and that person have nothing in common apart from the “robot or not” question. (Which of course is not a real question in HM. Seriously. He’s just an accountant. There’s nothing mysterious about him. Nothing at all.)