Hold the phone. Joseph Campbell wrote more than
Hero. But let's face it. Every story
is a formula. Campbell illustrates this in
Hero, but his larger point is that mythologies -- everything from Egyptian and Greek myth to the Bilble, to the Book of Mormon, to yes,
Star Wars -- are stories that tap into themes common to all humanity. Campbell called it monomyth. Jung called it the collective unconscious. The problem we have today is that Hollywood is too busy treating storytelling like a business so it uses business school analytics to suck the soul out of its scripts. They are afraid to make a movie that people won't like. They want everyone not to hate it. Well, if your goal is not alienate anyone, you will achieve the exact opposite. No one will trust you, no one will believe you, and no one will care. It's called pandering, thank you, and welcome to the 2013 summer movie season. Hollywood plays it safe and sticks to audience response metrics and focus group re-writes. Well guess what? They don't work because storytelling by committee blows.
And if you think you can't apply Campbell's work to "deep character studies," you don't know the breadth and scope of his work, or that flawed characters are what makes the hero likeable or at least worthy of our interest. Perfect is boring. I would argue that the protagonists in 2001, the Sopranos, Game of Thrones, etc. have more in common with Wolfram von Eschenbach's Parzival (Campbell's poster child for the flawed hero who's always getting things wrong by trying to do the "right" thing) than you know.
I guess the biggest problem is that our Hollywood storytellers are a reflection of our larger society and culture which in case you haven't noticed are in a bigger state of collapse than the summer box office receipts. But that thought is too depressing to delve into right now, even by /. standards.