SERIES PREMIERE: Remember the excellent HBO drama series In Treatment, in which Gabriel Byrne played a therapist counseling a series of patients in intimate, often intense concentrated sessions? Well, this new Showtime series is similar, except that both its therapist and patients are real, working their way through actual conflicts and issues, as cameras and microphones record their progress, or lack thereof. This may sound like a paradoxical position for a TV critic, but my personal