I'm not exactly sure what speical your refering to thats already been played 2 times but I'm sure some people haven't heard it so it gives them a chance to catch up.
I don'y think he realizes that the History of Howard Stern Part II is coming up. He probably steals . . . errrm . . . listens to the feed which has no commercials or plugs for upcoming specials.
I really wish people would refrain from talking about stuff that they have no clue about, this place would be much more enjoyable if they did. JMHO.