- The film is the first five years after "Thunder in the Earth", photographer Roger Diggins once again collaborated with the Coen brothers. The works of the Coen brothers, with the exception of the "Drunken Country Folk Songs" in the middle, were shot by Bruno Del Bonnell, and almost all of them were photographers by Roger Diggins.
- Joel Cohen’s wife Francis McDomond appeared in the Cohen Brothers film for the eighth time.
- The film is the fifth film that Channing Tatum and Jonah Hill have collaborated with after "Dragon and Tiger Boys", "End of the World", "Lego Movie" and "Dragon and Tiger Boys 2".
- The film company "Capitol Pictures" in the film is fictitious, but it also appeared in the 1991 work "Barton Funk" by the Coen Brothers.
- Also filmed on the same set at the same time as "Long Live Caesar" is the TV series "Los Angeles Series" directed by James Franco.
Hail, Caesar! behind the scenes gags
-
Catholic Clergyman: It's the foundation of our belief that Christ is most properly referred to as the Son of God. It's the Son of God who takes the sins of the world upon himself, so that the rest of God's children, we imperfect beings, through faith, may enter the Kingdom of Heaven.
Eddie Mannix: So, God is - split?
Catholic Clergyman: Yes! And no.
Eastern Orthodox Clergyman: There is unity in division.
Protestant Clergyman: And division in unity.
Eddie Mannix: I'm not sure I follow padre.
Rabbi: Young man, you don't follow for a very simple reason. These men are screwballs.
-
Protestant Clergyman: God loves everyone!
Catholic Clergyman: God is love!
Eastern Orthodox Clergyman: God is who he is.
Rabbi: This is special? Who isn't who he is?
Catholic Clergyman: But, how should God be rendered in a motion picture?
Rabbi: God isn't in the motion picture!