Bart travel to the Thomas Edison National Historical Park in West Orange, New Jersey, with his electric hammer to destroy the chair, but Homer notices a poster of Edison comparing himself to Leonardo da Vinci, much like how Homer compared himself to Edison. Feeling a renewed connection to Edison, he decides not to destroy the chair. Homer and Bart return to Springfield, unaware they left Homer's electric hammer at the museum. Later when the family watches the news on television, Kent Brockman announces that the chair and electric hammer have been discovered at the Edison Museum and are expected to generate millions for Edison's already wealthy heirs, to the ire of the family. Production "The Wizard of Evergreen Terrace" was written by John Swartzwelder, who had a deal with the producers of the show to write five scripts for season ten. Although he was the one who wrote the episode, Dan Greaney was the one who came up with the idea for it. Greaney based Homer's intense obsession with Edison on the fact that when he himself would have an obsession with something in life, he would badger and bore people with details of it. "Homer's relationship to Thomas Edison's achievements is a version of my own experience of trying to communicate the experience of things you love by driving people crazy," Greaney said in a DVD audio commentary for the episode. The untippable chair was also an idea of Greaney's; while working on the episode, he was leaning back in his chair and fell backwards. He casually said it would be great if there were legs on the back of the chair and someone in the writing room said that would be a great invention for Homer. Soon after coming up with the story, Greaney told it to Swartzwelder so that he could turn it into a script. Greaney said "it couldn't in my best dreams have turned out as good as it did if I had written it." Mark Kirkland was the director of "The Wizard of Evergreen Terrace". He recalls that when he attended the table-read for the episode, the staff thought it was "hilarious" and they could tell it was "going to be a good one." It was the last episode to be produced during the season nine production run and because it takes several months to complete the production of a single episode, it had