Enforced Method Acting: Mel Gibson didn't know Jason Isaacs was going to say "Why wait?" in the main page quote. Isaacs went to the filmmakers to say it was too early for the villain to be afraid of the hero. Details can be found here.
Hey, It's That Guy!: Tom Wilkinson hopped sides - here he's the British Admiral Cornwallis, but later in 2008's John Adams, he plays the revolutionary Ben Franklin.
And of course, maybe this movie should have been called "Mad Max beyond Charleston"
Lucius Malfoy dyed his hair brown, tied it into a ponytail and somehow became an even bigger bastard.
Odo seems to have ended up as a preacher in the American Revolution; possibly through some sort of temporal anomaly.