Caryl Churchill’s 1979 comedy uses one sexually mixed-up family to poke fun at British imperialism and the mores of the Victorian era and the 20th century. In the first act, colonial bureaucrat Clive keeps as tight a rein on his family’s sexuality as he does on the African natives’ freedom. In the second, 100 years have passed (although the family has aged only 25 years), and the repression is subtler. Genevieve Thompson’s production for Infamous Commonwealth Theatre is engaging and funny, but she seems interested in each character’s personal longing above all else. This not only dulls some of Churchill’s political points but throws off the play’s crisp timing–especially in the second act, when this production loses its bite altogether. Through 12/18: Thu-Sat 8 PM, Sun 3 PM. No show 11/24-11/27. National Pastime Theater, 4139 N. Broadway, 312-458-9780. $18.