It’s no secret that This Is Us is one of TV’s best new shows. Between the unique way of presenting one family’s unfolding story and the deeply relevant and relatable characters, This Is Us has many of us laughing one minute and crying the next.It is an easy show to love.But there is something important taking place on Tuesday nights at 8:00 CST that must be addressed even if you haven’t seen one episode yet. TV has been waiting decades for Jack Pearson. Here’s why.For years, we’ve watched popular sitcoms and TV dramas depict husbands and fathers disengaged from their...