I know that the Batman show itself led to the showing of serials, not just the Batmen, in theaters here and there around the country; it's possible the reverse was initially true, but I've never seen this stated definitively. I'll ask some comic book types. Two things working against this Playboy mansion theory--I'm pretty sure the Playboy mansion, and Hefner, was still in Chicago prior to the time the Batman show started. And the style of the show is nothing like that of either serial.