NBC’s breakout freshman drama This Is Us has hit another ratings milestone. The series’ Feb. 7 telecast has ranked as that week's #1 broadcast series in Live+7 adult 18-49 rating, marking the first time This Is Us has outrated the same week's original of veteran CBS comedy series The Big Bang Theory in L+7. The L7 victory comes after This Is Us edged The Big Bang Theory in Live+3 ratings the last two weeks.