Part 7. With nothing more than dialogue, and an occasional dash down the street or impulsive shove, Chris O’Dowd and Rosamund Pike have made their characters here come fully to life. They play a married couple, at this point living apart and seeing a therapist, trying to decide whether to heal or put an end to their marital relationship. This 10-part series is written by Nick Hornby and directed by Stephen Frears, who collaborated on the wonderful movie version of High Fidelity. And by now, I’m desperately rooting for the characters to work it out, because their conversations are more charming and witty than just about anything else on TV. In fact, I want a sequel series, please.