I found another porn parody based on a game show, this one being Hollywood Squares. For better or for worse, this was based on the John Davidson era, as evidenced by the HS logo and set design, as well as a "performance" by "John Davidson" himself.
I haven't seen the movie, but based on the reviews, it wasn't particularly impressive.
So, who are the celebrity Squares? In order based on how Shadow Stevens called them (center square first, then the corners, then the center left and right, then the upper and lower center squares):
Kim Kardashian, Ron Jeremy, Barack Obama, Sarah Palin, Paul Lynde (yeah he lost his center square status in this one), Lady Gaga, Lindsay Lohan, Alf, and Alex Trebek (sorry, no Shadoe Stevens in this one).
Since there is no clean Youtube clip of the trailer, and while I did find a trailer, it is not a clean one, since I don't want to link to a NSFW source, if you want to check it out for yourself, just Google "This Ain't Hollywood Squares" and you'll find it.
I have a feeling that a "Match Game" parody isn't far behind at this rate.