I see you shiver with antici… Photo: Joan Marcus What did we do to deserve Rocky Horror ? Not much, but then again, a kinder, freer world — a world that didn’t sort people into fits and misfits, that didn’t demonize sex and deprecate pleasure, a world without fear of the forbidden and alien — might never have produced such a gorgeous, garish, slutty little flower. Whether Show or Picture Show , Richard O’Brien’s 1970s queen-of-the-cult-hits is living-dead proof of a truth that should be more