FAMILY TREE
HBO, 10:30 p.m. ET
Because of last week’s pre-emption, this is only Episode 3 of this new Christopher Guest series, so its hero (played so amiably by Chris O’Dowd) is still investigating his family tree in the United Kingdom. Last episode, in search of information about his family roots, he made a horse’s ass of himself (literally, as part of a two-man costumed athletic competition). Tonight, sister Bea (Nina Conti, who’s great) takes her talking monkey puppet and accepts a job as a wedding entertainer. It does not go well.