Ron Howard is the current holder of the production rights for The Dark Tower Series to be adapted into film or television. He bought the rights from Stephen King for Nineteen million dollars. Ron Howard is an actor, director and producer.
Although he has held the rights for years, the project still hasn't officially picked up, although Warner Bros. had it and dropped it.
As of September 17, 2013, Ron Howard has stated that he is still interested in making something of the series, and it wasn't until recently that he noticed the media attention. Ron Howard's Confirmation