"Rain Man" also has WoF, Pyramid, and J! clips throughout the movie as well.
Can't forget TTTT in the opening of "Catch Me if You Can," as well...
Finally, to take this into extreme minutae, and not even a real game show, at that...in "X-Men 2," when Hugh Jackman is flipping through channels, you can briefly hear the old GSN music tag (the one they used to play at the end of all their original shows).
--Sam