If you've enjoyed a comic book from the past 20ish years, chances are Brian K. Vaughan has had something to do with it. A multiple Eisner and Harvey Award winner, Vaughan's sterling titles include Saga, Y: The Last Man, and Runaways, which was recently turned into a Marvel/Hulu show. But around 10 years ago, roughly at the same time when Vaughan was writing for Lost, he wrote a darkly comedic high-concept feature screenplay called Roundtable. It ranked high on The Black List, an industry list of well-liked, unproduced screenplays. And now, while it's not …