I don't like people who use their celebrity status (whether pseudo or real) to influence other people's opinions on a completely unrelated topic.  A fine example is Spacedoc, who uses his status as a former astronaut to preach on the evils of cholesterol medication.  Yes, we find out later that he was, in fact, a doctor and so he might have at least an ounce of legitimacy.  But he uses his astronaut status to preach something that has nothing to do with being an astronaut, simply because he knows people will trust him because of his stint as a well-respected pioneer of the unknown.  That's total B.S. #psychology