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A: It is indeed a pretty thin subgenre, and DVD availability within the subgenre thinner still. Of course, you need to see the disturbing 1971 Straw Dogs (Criterion), in which Dustin Hoffman’s tetchy math whiz loses it in a home invasion. The recent low-budget time travel pic Primer (New Line) will appeal to the Pi lover in you. The 1999 Conceiving Ada (Wellspring) is an eccentric treatment of real-life math genius Ada Lovelace. And European dramas A Hill on the Dark Side of the Moon (1983, a biopic of Sonja Kovalevskij) and Death of a Neapolitan Mathematician (1992) aren’t readily available here, alas. . . . Any suggestions, readers? Drop a line—but check out the nifty website Math in the Movies first, because I already did.