Last Sunday, the two-hour premiere of Showtime’s Twin Peaks, despite all its advance hype and its defiant lack of advance screenings and information, drew fewer viewers than even this first-season Starz series – which, as it rolls out, may indeed be giving Twin Peaks: The Return competition not only in audience levels, but in levels of surrealistic unpredictability. Tonight, for example, the modern god known as Media, played by Gillian Anderson, adopts another of her high-profile guises. And this time, it’s David Bowie…