As far as I know, most of the films of late, great, obstinate French director Jean Eustache have never been seen in Chicago, and the retrospective at Siskel picks up every last stitch of his autobiographical weave. Every six or seven years, I wind up getting to see 1973’s “The Mother and the Whore” (May 24, 28), Eustache’s astonishing, coruscating, relentless Jean Pierre Leaud-starring four-hour 16mm-shot black-and-white post-1968 sexual-politics talkfest, and it’s always a waterfall of conflicting notions. (More about it next week.) Not available on DVD in the US, the most recent subtitling job added sped-up captions for its verbiage, replacing the older set that included the words “untranslatable pun” several times. It’s the sort of smart, immediate, immersive experience that demands to be seen on the big screen, as I imagine the other films to be as well, including his follow-up, “My Little Loves,” a look at childhood. Also this week: a biographical doc paired with “The Pig,” his 1970 documentary that follows a swine from farmyard to sausage grinder. (Ray Pride)