On Entertainment Tonight, they had a story on this years season finale. It is called "the Pilot", and will be an hour long and on May 20th (same night as final Cheers show). It will have to do with the making of Jerrys and Georges show, appropiately titled "Jerry", and it has the makings of a great one. They showed the three actors who will play George, Elaine and Kramer, with Jerry playing himself. Jerry said it was basically a show within a show within a show.
Just thought you might be interested
Kevin