 The teaser is followed by the main title and credits in which the show's four main stars are introduced.Midway through the first season, the Beaumont voice-over introduction was discarded in favor of a brief scene extracted from the episode at hand, and, at the end of the first season, the teaser was entirely discarded, moving immediately to the title and credits.In seasons five and six, significant crew are listed in an extension of the opening credits after a commercial break.