My ghetto Yahoo! newsfeed asked, "Why is Twilight a bargain blockbuster? The filmmakers have discovered a formula for making big movies on the cheap."
I didn't read the article (it's here if you wanna know their 'inside scoop'), but I'm guessing it has something to do with sleevelessness.
That's right, my Twilight-on-the-cheap hypothesis centers around Taylor Lautner's consistent lack of sleeves and, in most cases, shirts all together.
Well, that and shoddy film making.