Many of the scenes were filmed on the same day in different areas of a large toy company in Santa Monica, CA.
The ashes of reporters who have been set afire for blasphemy in the final scene are not typical of human ashes. They are the result of wood fires.
The final credit of the film is "Summer is Coming." This is both a play on words in reference to the idea of a sequel to the film, which there won't be when one considers the ending (ie: "Coming This Summer"), and an oblique reference, after the subject of the movie, to Mark 13:28 in the bible.