18. He's Written A Bunch Of Comics
Stephen King is a huge nerd. Recently he's been penning back-up stories in Scott Snyder and Rafael Albuquerque's American Vampire stories, he's such a fan of the creators. He's also supervised graphic novel adaptations of his books and short fiction including N, Throttle, The Dark Man, The Stand, The Dark Tower, his Peter Straub collaboration The Talisman, and Creepshow, the film he wrote with George Romero.
His involvement with funnybooks doesn't stop there, however. In 1986 he wrote the introduction to the historic Batman #400, where he backed up his nerd credentials by providing a passionate argument of how he preferred the Dark Knight over DC's other flagship superhero, Superman.
In 2006 he authored some original stories for the graphic novel collection The Secretary of Dreams, but before all of that he was just an X-Men fan who was super stoked when asked to pen a charity issue of the book. Heroes For Hope: Starring The X-Men was published to raise awareness for African famine relief, and also involved scripting from Harlan Ellison and George RR Martin. King penned the first few pages, and apparently had a lot of fun doing so.