You must recognise some.
Sean Connery? Alex Salmond? Billy Connolly? Jackie Stewart? Lulu?
( Neptune A dole queue dosser and foul mouthed chav., Mon 11 May 2009, 18:10, archived)

I don't remember ever seeing any of them in the street,
so empirically, no.
I don't think I'd even recognise Simon Munnery, and I've spoken to him.
( Moon Girl Technologies horrendous beanbag, Mon 11 May 2009, 18:12, archived)