According to this recent interview the creator of Family Guy, Seth McFarlane, has a deal in place to have a Family Guy movie and wouldn't mind the idea of then ending the show. Seth wants Family Guy to be a film every few years and wouldn't mind trying to get Star Trek back on the air as a television show.
I stopped watching Family Guy awhile ago having got burnt out on the same style/type of jokes launched at me every episode. I know the style of Family Guy has since changed, less referential, but I had already moved on by then.
So what do you Pups think? Is Family Guy relevant enough, or popular enough, to warrant a motion picture? Would you cry if new episodes stopped popping up on TV?