In the final episode of The Office, sarcastic clerk Tim (Martin Freeman) describes the central absurdity of working life. You have nothing more in common with your co-workers than the carpet you walk on, he says, and yet you have to spend more time with them than with your friends and family. Leaving a job, he might have added, is even stranger: suddenly, to your "family," you no longer exist, and a new sibling takes your place.
Some sitcoms leave just as little impression when they depart. Fortunately, this two-hour finale (BBC America, Oct. 21, 9 p.m. E.T.) offers a satisfying, touching and excruciatingly funny severance package.
The...