I still think it would be brilliant if they ended the show at season 10 and tied in the whole contract thing into it. BUT I never want Supernatural to end, so. maybe if it ended 10 years after he entered the show?
Let's not forget A Very Supernatural Christmas, Jump the Shark, and Mannequin The Reckoning. There are so many episode titles that are a play on words for real movies and TV shows. Yet one more reason I love this show. Everybody hates Hitler .