This is probably a dumb article, because it seems pretty obvious, but it is for a purpose.
I will start off by saying it is VERY IMPORTANT.
Think back to a few years, what was the biggest dissapointment about Fantastic Four 2, A Reed Richards who dances and smiles at the camera? A bland, boring Jessica Alba? A pretty boy emo Victor Von Doom? A perfectly casted, yet comletely underutilized Michael Chiklas as the Thing? Odds are you disliked all of those (Even if you still enjoyed looking at Jessica Alba) But the biggest disappointment was most likely Galactus as a cloud.
This badass was depicted as dirt. Space dirt.
Need another exmple?
Nuff said.
Now, a great villain can also carry, or further bolster a good film. Case in point, Heath Ledger.
His performance was breath taking. He was the Joker. Now the Joker is a complicated fellow, while most have adopted The Killing Joke by Alan Moore as his canonical back story, he doesn't formally have one. This helps because there is no way to "betray the lore" so to speak. However, he is also such a well known and beloved character that at the slightest sign of a weak performance, all hell breaks loose, but still. Ledger delivered.
Another example, which also includes the Joker, is Mark Hammills performance in Batman: The Animated Series. His delivery as the Joker was incredible. His laugh alone is reason enough to love this characters portrayal. He changed it up for each one. His performance was so loved that he even came back in the recent games Batman Arkham City and Arkham Asylum. As well as the less than successful DC Online.
This is not news to anyone. But boredom on a Saturday night leads to rambling. And this was all to prove a point.
I think that a Green Lantern sequel would be much better movie than its predecessor because while it did have its problems, it also had very uninteresting, and frankly dumb villains. I am no Green Lantern fanatic, but even I know that they really messed up with Parallax. and Hector Hammond was pointless and cheesy at certain parts. No real threat from him. But that scene after the movie did get me excited. I know how good a villain Sinestro and the Sinestro Corps would be. Sinestro is easily Green Lanterns most popular villain. And jumping into him straight out of the gate would have been difficult. So if DC pursues a Green Lantern sequel, I think I would actually get excited, because I know it would have the potential for a great villain in Sinestro.
And it may be wishful thinking, but it wouldn't be impossible for WB to connect Superman with Green Lantern since Mongul is a member of the Sinestro Corps.