Even though I really hate the massive hatedom towards Other M (inasmuch as I hate hatedoms period), I will say that it would probably be better off if Samus just never spoke again, for everyone involved.
Though her characterization in Fusion was decent.
EDIT:
I read on the Star Wars wiki that while sometimes the Light Side of the Force is associated with complete control over one's emotion, sometimes it can be activated through the emotions of love, joy, happiness, and all that stuff, while the dark side is exclusively limited to "dark" emotions like passion, hatred, fury, and anger.
...And sometimes, all emotion is equated with the dark side, because the writers can't seem to keep this shit straight.
...Quick question: how the hell is passion a "dark" emotion? Its pretty much the main driving force of everything worthwhile.
Personally, the whole "light and dark" Force things are just plain old lazy writing; it gives writers the excuse to use that most simplistic trope of black-and-white morality. I'm sure some authors delve into the grey areas because creative freedom, its more that it rubs me the wrong way as a story telling device because it removes the intrigue that grey areas always introduce.
In all honesty, ther's a lot of inconsistency in the EU and main canon about what the Light/Dark sides of the Force actually are.
Some authors write it that the Force encompasses both the Light and Dark sides. Some say that even an excess of the Light Side could doom the universe. (the recent Clone Wars series went with this line regarding the Son and Daughter, gods who became aspects of the dark and light sides of the force, with the Father, who maintains balance betwen them and can't let EITHER go free from the planet they're on)
Some authors write it that the Force IS the light side (or rather, that there isn't a light side because the Force is naturally light) and that the Dark Side is a
corruption of the Force. (This is the default assumption made in the six movies.)
Even in-universe, there's different lines of thought. One character wrote a thesis which indicated that there were no light or dark sides to the Force, just the Force itself, and what made someone evil was their motivation for using it. A theory that Yoda soundly rejected and even found threatening. Unfortunately, Yoda is never allowed to be wrong when he says something.
And then there's the whole "Electric Judgment/Emerald Fire" thing, which was basically Force Lightning as used by a Jedi. Or... is it still Force Lightning? EU can't decide which one.
Can Jedi use dark side powers without being corrupted into evil? Not even the main movies can really decide on this, as there was a moment where Luke tapped into the Dark Side to defeat his father, then effortlessly came back before doing the Good Is Stupid thing of throwing away his lightsaber in front of Darth Sidious. And then there was a moment where Obi Wan, fueled by feelings of revenge, cut Darth Maul in half, and this NEVER gets addressed in the main films as a bad thing.
As far as "passion being an evil trait", the Sith themselves seem to believe this.
Peace is a lie, there is only passion.
Passion gives me strength.
Strength gives me power.
Power gives me victory.
And through victory, I shall break my chains.
The Force shall free me!"Or something like that.
EDIT:
Now that I think about it, they could be using the old definition of "passion", which is "suffering".
@Sour Grapes
Yeah that's... pretty damn obscene.