"At Long Last Leave" is the fourteenth episode of The Simpsons' twenty-third season, and the 500th episode overall of the series. In the episode, the Simpsons discover that the inhabitants of Springfield have grown tired of them and have secretly decided to throw them out of the city. After being evicted from Springfield, the family members end up in a rugged place without rules and regulations called The Outlands. There, they briefly come across their neighbor Julian Assange, who created WikiLeaks. Assange guest-starred in the episode as himself and recorded his lines over the phone while under house arrest in Britain, while waiting for the results of Assange v Swedish Prosecution Authority.