I've never posted to this group, or even subscribed until now. (After the show is over -- figures, uh?) But my feeling on the final episode was this: it was, in sorts, a social statement. The four were thrown in jail for basically being themselves, and they were not hurting anyone, just innocent people who witnessed a crime, and for that they are thrown into jail??? The hidden meaning: the innocent are the ones who suffer and get the punishment in this society while the guilty go free. This is just my opinion, but for a series that never really made a social statement, this could have been it. I think it makes sense because many people who are guilty always get off while the innocent get off. That's just my opinion.
Also, I think Johnny Carson will be on the Tonight Show tonight. Remember, he's the one who basically gave Jerry his big break, so it would only make sense!