You may well be right - the first time I met him, season 1 had only just gone out so the insanity hadn't really had time to pick up, which may be why he looked both surprised and pleased to be recognised. Granted, John gets the crazy fans on a daily basis, but he's... John.

Although we have some friends-of-friends in common (oh God, I sound like such a twit saying this stuff, but I swear it's just because we come from the same area), and I do get the impression that he can be something of a wanker when he pleases.