I will clarify that I mean Marina from Sinbad - the spunky heroine. Not so much as Eris the goddess of Chaos. SHE MADE THE MOVIE. Why? Because the woman was the plot. If you remove her, there is no plot. She was awesome.

And come now, seriously: Remove our heroine for an equally precious object.
Take pirates of the Caribbean. Imagine if, say, some personal keepsake of Will had been taken away by Barbosa. Something really personal. Can't you imagine him getting all caught up going "Damn pirates, I hate pirates, I'm GETTING IT BACK!"?