On a recent Jeopardy! Trebek said the show’s true star is its contestants, but from where I sit — on my couch, shouting out answers-in-the-form-of-questions almost every night — the real draw is the clues, which are precisely written and briskly dealt, numbering 61 over a typical three-act episode. When the show announced that Mehmet Oz of The Dr. Oz …