In the year 2154 two classes of people exist: the very wealthy who live on a pristine man-made space station called Elysium, and the rest, who live on an overpopulated, ruined Earth. And those on Earth speak Spanish. That’s the plot of the new movie, “Elysium,” and one of its stars, Diego Luna stopped by the Conan O’Brien show to give Conan a crash course in Survival Spanish to great comedic effect.