Ming: Klytus, I'm bored. What plaything can you offer me today?
Klytus: An obscure body in the S-K system. The inhabitants refer to it as the planet...Earth.
Ming: How peaceful it looks...[Causes an earthquake.]
Klytus: Most effective, Your Majesty. Will you destroy this...ah...Earth?
Ming: Later. I like to play with things a while, before annihilation. - Flash Gordon (1980)
But more interesting than these plot changes is the character adjustment. In the original, Beowulf is a hero. In the new film, he’s basically a jerk, whose most sympathetic moment is when he finally realizes that he’s a jerk. It’s hard to imagine a more complete reversal of values from the original Beowulf story.