Last week, after eight seasons and one network change, the long-running cop comedy Brooklyn Nine-Nine aired its series finale. Andy Samberg, the star of the series, happens to be married to Joanna Newsom, the mysterious harp genius who has been largely out of the public eye in recent years. For the big final episode, Newsom made a two-line cameo — her first acting performance since she played “Steam Punk Doctor” in Popstar: Never Stop Never Stopping in 2016.