At present, the title here on HN is "Gravitational lensing by spinning black holes in astrophysics" -- to which my immediate reaction, and I suspect not only mine, is: what, as opposed to in cookery?<p>The original article title gives the answer: "... and in the movie <i>Interstellar</i>". Since the article really is about the rendering techniques used in the movie as well as about the physics of rotating black holes, I suggest that the HN title be made to match that of the original article.