ABC’s The Middle has made the sagacious move of bringing a new 30 Rock graduate, Jack McBrayer, aboard. He’ll play a “boyish and disheveled” dentist who hires Patricia Heaton’s Frankie Heck as a hygienist. McBrayer is reportedly being eyed for more than one episode. It’s a good start. Next step: McBrayer being eyed for more than one episode on all the good comedies on TV.