Fantastic idea! Since Family Guy uses music so often as a form of humor, I think it's completely appropriate to have a page dedicated to said music. I don't think, however, that it belongs on Wikiquote. So I've List of songs from family guy:moved it to a Wikipedia page, and made the old Wikiquote page a redirect page. As I have time over the next few days, I'm going to help out adding a lot more stuff; for now, I've just started the article. Please see the talk page of the Wikipedia page I've created; I've listed my ideas there for discussion.