I think this run of adverts had various 'celebs' making fools of themselves as a way of representing the common strangeness of folk that visit post offices. In a way i guess it shows Ray's ability to laugh at himself, an admirable quality. Shooting Stars once did a sketch with Vic Reeves playing Ray drinking water out of a crisp packet in a park, now i like Ray as much as the next guy who'd disown his own mother to spend a night in the woods with Ray, but that sketch made me laugh.