SERIES FINALE: For nine seasons now, this ABC series has celebrated and found humor in the daily struggles and triumphs of the working class. The Middle, starring Patricia Heaton as the matriarch of a free-range but loving household, was the spiritual sister of Roseanne that occupied that same sitcom territory in the period between Roseanne and… Roseanne. And now, after all these years, The Middle bids us, and itself, a fond farewell.