There is a scene where Mel Brooks talks about all the different kinds of toilet paper options for Larry. This mirrors the Seinfeld episode where George Costanza says there have been no improvements to toilet paper in his lifetime, to which Jerry and Elaine say he is wrong by listing all the different toilet paper options available.
Three characters from the film I Am Sam (2001) happen to be in this episode while one of them says his name is Stanley which is the same name he had in I Am Sam.