I'm blanking on the line too, but here are a few things that I remember which might help:
It was in "The Suicide." Kramer and Newman were sitting in Martin's hospital room talking. George had gone off in search of the psychic and Elaine was waiting for her ulcer test. Jerry wasn't in the room, but he entered a little later with two Drake's coffee cakes and used them to keep Newman quiet about him and Gina.
That's all I can think of...anyone else? Again, the line is:
KRAMER: _____ is the biggest scam perpetrated on the American people since one-hour martinizing.
Side note: The one-hour martinizing scam is discussed in Jerry's book "Seinlanguage." Also...someone's bound to say that Kramer was referring to the Dewey decimal system. That was from "The Library." This is something different.
Michael Alexander