In short, if you like anime, watch this movie... no excuses!
Anyway, on with the trivia!
Let's see how well you know you're anime culture!

In the 1st season of Sailor Moon, most fans of the show know of Queen Beryl's "Generals":
Jadeite
Nephrite
Zoisite (the fan favorite)
and Kunzite
In the subbed version, however, the term used for them is "Shitennou".
The question is, WHERE does the phrase "Shitennou" come from, and WHAT does it refer to?
BONUS) As you can tell, the real source of this term refers to 4 "other generals". Name them!
~Otaku-Man